I have Solid Diff covers front and rear. They recently lowered thier prices from $120 down to $80 and over Cristmas they were as cheap as $60. They are very heavy and have a lifetime warranty. The "kit" includes the cover, new allen head bolts, tube of gasket maker, and a sticker. If you call them directly they will give you a 5% Military discount and with shipping the total is $90.
When I installed mine I re-used the stock bolts that were in the D30 and 8.8. The Allen bolts were ok, but I decided to stay with the standard bolts since they are harder to strip out.