The Stovebolt Site Forums The Shop Area Driveline 58 3/4 ton universal joints

Hy rwb, there are two different possibilities for "U" joints
GM p/n 3830580 has a .615" finger diameter, the Napa p/n for this joint is PUJ369 0r NPJ369
GM p/n 3708961 has a finger diameter of .773", the Napa p/n for this joint is PUJ331 or NPJ P331
As to the rear engine mounts they should be Anchor p/n 2107 for the upper, the Napa p/n for this part is BK6021034 and Anchor p/n 2108 for the lower, the Napa p/n for this part is BK6021035 hope that helps.