I have the rubicon 4.5 in my heep now
Just seems like the tjs flex a lot more then
Mine I thought about geting revolver shackles
But was told there not good on a daly
The mounts are not a issue as I can machine
My own at work
forget the revolver shackles extra flex is not a good thing and if you ever get in a situation to cause the suspension to unload they will throw the body further in the direction you don't want it to go
i have had my suspension unload a few times the front is not as bad as when the rear unloads the first time the rear unloaded on my i nearly pooped my pants and my brother ridding shotgun screamed like a little girl the hill i was on was like 75-80 degrees down and 2 other jeeps have endowed going down this hill and i was almost the 3rd but i did not hit the brakes like the other 2 guys did i mashed the gas and went for a ride the funny thing is this trail is meant for stock jeeps
my suspension set up is extremely flexy for a leaf sprung rig i can max out a 15" travel shock i have 5" uptravel and 10" of down travel in the front with less traveled in the rear due to mounting location and a shorter shock when i outboard the rear shocks i will have more up travel and the same amount of down here is my rig flexed out till the tire hit the bumper i have a 2" more down travel on the driver side shock and the passenger side was hard into the bump stop
my current suspension set up is d44's front and rear soa with waggy front springs in the front and and toy rear springs in the rear netting me a 6" wheel base stretch rolling on 38" tsl's
this winter i am installing a full width d60 front and ford 9" rear same springs just i am lowering the jeep 3" and installing slider boxes for shackles in the font for a more linear spring rate standard shackles in the rear both will be frenched into the frame to get the ride height i want
in order to get better off-road ability out of any rig you need to improve 3 things ground clearance, traction and stability
ground clearance- the only way to improve ground clearance is larger tires and ground clearance is measured under the lowest point of the vehicle to the ground that means the diffs to the ground not belly height so a lift kit will net you no ground clearance gain but only allow you to keep the body intact to run larger tires
traction- the only way to gain traction is to have a good quality off road tire and add lockers my preference on tires is bias ply tires on bead locks running low pressure and for lockers i prefer a spool in the front and a selectable in the rear and people will say you can't steer with a spool in the front all you need to do is phase your u joints in the front axle and add ram assist on my d60 i am running a selectable up front cause this jeep will see some street time and i am running drive slugs so i will not break another lock out hub and a rear spool hurts your turning radius more than one in the front cause it pushes in a straight line
stability- you add stability by going lower, wider and longer that is it imagine your jeep as a pyramid with the center of gravity being the point of it and the contact patch of the tire being the 4 bottom corners the taller the pyramid is the easier it is to tip if the point of the pyramid breaks the plane of the edges it will fall over so if you keep the pyramid short, fat and long the more angle from the horizontal before it will fall over
now i have not ever seen your jeep and don't know much about it other than what is posted but to improve flex on a standard leaf sprung yj or cj you can do several things a pull the sway bar or add disconnects i have not had a sway-bar on my jeep in 5 years and remove the track bars they hider flex a lot i know kirk has disconnects for the sway bars and front track bar on his jeep
with your leaf springs you can do quite a few things like open up the clamps add soft rubber bushings not poly bushings and only torque your leaf spring shackle bolts to about 40ft-lbs those things will really smooth out the ride (for a while i was running my leaf spring shackles with the bolts loose enough i could slide them back and forth .25" and i had jamb nuts but the ride was really soft and smooth but i broke the bolts off road so i tightened them back up)
and to answer your original post it is not worth the time or me money to put a factory tj short arm lift on a yj if you had a long arm kit and a set of tj rubi d44's lying around that would be a different story cause with all the welding and cutting involved you would still only have a jeep with a marginal suspension geometry and a set spring rate if i was to do it i would make my own with a custom 3 link front and double triangulated rear suspension using ori struts