I have a 66B Cuda, with 15 in Keystones. It was like this when I got it. It has the 74, up big bolt pattern, and front brakes, with an 8 1/4 rear. All with no problems.
Dave
Thanks so much. great info. I'd hate to buy all that gear and find it won't fit. Great looking cars! Hope mine looks as good when finished. I'll post pics.