This is the list someone posted on here before.
Radiator Support: 7/16"-13 x 3.375" carriage bolt
Body Mount #1: 9/16"-12 x 6" hex head cap screw
Body Mount #2: 3/8"- 16 x 10" Carriage bolt
Body Mount #3: 3/8"- 16 x 5.5" Carriage Bolt
Body Mount #4: 3/8"- 16 x 4.5" Carriage bolt
Body Mount #5: 3/8"- 16 x 5.5" Carriage bolt
'71 Blazer CST w/ a 400sbc, 4" lift, 36" Supper Swampers, and alot of rust