I too used the SSBC kit on my '71 Dart GT. I'm running factory 14" X 5 1/2" Rallye wheels with 3 3/4"(?) backspacing. Originally I had P215/70R14 tires on the front which would rub on tight turns. I have since swapped to P195/75R14 tires. Also remember the SSBC kit pushes the front wheels outboard 3/8"(?).
