Using mustang rotors for 4.5" bc

i know this thread was about using the older 4 piston kelsey hayes calipers, the machining work to make those mustang rotors work was really cool and a very good idea, however i am going with the 73 up spindles as i have them handy, but this is where the A body adventure ends and the oddball non A body swapping begins. below is the rest of my swap parts

if you swap the spindles left to right you can get the calipers to mount at the rear allowing you to use a front sway bar. also a stock 77 chrysler cordoba rotor is 11-3/4" diameter, larger threaded studs 5 bolt 4-1/2" circle, and slides right onto the 73 up A body spindle. bearings, seals ETC all the same.

i plan on modifying a pair of speedway motors weld on caliper brackets designed for GM metric big brake calipers $9.99 each, making them into a bolt on bracket. a pair of 1/16" shim washers between the caliper bracket, and the spindle will space it out nicely to center up the caliper.

the "GM style" calipers are new speedway motors 2-3/4" diameter piston units $56.00 each brand new with pads, pins, bleeder, and banjo bolt.

as a side note these calipers have the bleeder and line hole the same size so the caliper can be used left or right side.

so to recap i will be running 11-3/4" diameter rotors, 2-3/4" diameter piston calipers with a better pin type retention system for the caliper rather than the stock 73 up flat metal plate system. plus i can find many more types of compounds of brake pads for the GM type caliper.

its just a thought but anybody can get them a set of the 73 up spindles and do this type of mod. you will also need the 73 and up upper balljoints too as the balljoint pins are bigger and the 73 up spindles upper balljoint mounting hole is bigger.

yes the 4 piston calipers are dead sexy but i am looking for ease of replacement parts and i am sure the 4 piston KH units are getting harder to find parts for.

think of this as just another way to skin the proverbial cat

matt