Just so I'm 100% clear on an 8 3/4 swap!!!
And no issues swapping to a 68?
There are two potential issues that you may run into, but they are not hard to work through....
1. If your car was originally a slant 6 car, the front bolt on the spring hanger is one size smaller... If my old mind can remember correctly, the slant 6 had 9/16" diameter bolts for the front spring "eye" and the v-8's had a 5/8" diameter bolt... You can drill the front hanger bracket out for the larger diameter and go to a good hardware store or Mcmaster-carr for a new bolt.... There's a local Ace Hardware around here that carries the proper bolt for the replacement...
McMaster-Carr
2. Somewhere along he way, they moved the bolt hole for the rear brake hose/splitter... I believe it was for 70 and later (again old mind and bad memory)... We had the wrong one for my son's 71 Valiant swap, and was able to order a custom one from The Right Stuff with 3" more hose length and solved that problem... But I think your going to be ok with a mid 60's to a later 60's swap....
