I thought I had a simple fix. I have a 76 TBird parts car. The ball joint mounts are the same distance apart, and the 55 and 76 use the same ball joint nuts.

So I tried one. The top ball joint studs fit. The bottom, while they have the same nut, the 76 taper area is larger, but the 55 stud can be shimmed.

However, the 76 spindle/rotor adds an inch to the track. I am using 235/60/15 on 7 inch rims. They just fit. Flared fenders anyone?

I guess it is back to Scarabird.

Ray