i have some 4" blocks i made, there solid 1" pieces of steel welded with the holes and dowls, i had them on my 71 4x4 but took the lift off, they worked great no probs with them at all , i cut the square u bolts off to get them off quick didnt realize they were worth anything.( dummy me) i do have the front u bolts. i know i have 3 for sure possibly if i look around i may find the other let me know .
chaberman@cybertrails.com