Thanks, Greg & Rock Crawler. Looks like I'll try to re use them, even if they don't come together with the thicker pack. The Rancho U bolts that came with the springs are too narrow to use with the isolator and don't line up with the holes in the spring plate. I would have to hog out the holes too much to make the Rancho bolts fit and that makes me nervous (possibly to much play) If I reuse the factory U bolts with out the isolator, that makes me nervous too 'cause the bolts will be wider than the springs (and possibly to much play) Greg let me know how you make out. Hows' that Red truck runnin? Talked with my neighbor about his '85 I told you about. He says he's in no big hurry to sell it any time soon. He wants to see what my truck looks like when I'm done and maybe do the same to his. Thanks again for the front diff, just ordered a new R&P for it today and having them installed next week. If any one out there han any more info it would be a big help. Thanx again, Jake.