[FWB]

while i can't speak for summit......i upgraded the suspension and the brakes at the same time.

i had stamped steel factory mustang upper and lower control arms with standard coil spring and shocks, bear in mind my car was built in 1979. in 2006 the BJ's and bushings were done, so i went with a Heidt's suspension upgrade, tubular uppers and lowers with QA1 coil overs, i bought the wilwood upgrade from them which included the 11 inch granada type hub\rotor and dynalite calipers. by buying both packages together, i think, i saved some dough. i can't recall what the brakdown was but the wilwood upgrade is available from a variety of sources so shop around for the best deal.