Using the fine thread strut rods will move the lower control arm back if you use the 73 two piece bushings. We just did a conversion on a Barracuda. The large bolt disc from a 73 moves the rotor face out 3/8 to 1/2 inch. Also the 6 inch wheel and offset for the big bolt pattern is greater then the 5 1/2 inch wheel.
I use 67-72 small bolt disc brakes and 68 ford mustang rotors to change to big bolt pattern. Keeps the rotor face at the narrow position. We ended up using 195 65 15 tires on the front of the Barracuda with 6 inch wheels to prevent them from hitting the front of the fenders. Good luck
View attachment 1716196351
View attachment 1716196352
View attachment 1716196353
