it took us 30 hours total because we did u-joints and seals, running new brake line, trying to figure out how to get a shorter drive shaft, having one custom welded., helping out other morons in the shop, fast food/cigarette runs, and part store/junk yard runs. But that didn't include the skids and sliders. I would say if you stay focused and have everything you need with you maybe 5 hours. The drum brakes really screwed us up also. For whatever reason, we couldn't get the drum to fit over the shoes on one side untill we took it all apart and did it again. There were lots of unexpected snags, and we were sleep deprived also. All in all a good learning experience and a good time. Just be ready with a shorter DS!!!