thank you very much
would there be a cheaper way to do this?
Absolutely. The kit you're looking at is all mopar parts, so you can get the at the local wrecking yard.
You can get all the parts except for the UCA's from an F/M/J car. Spindles, caliper brackets, calipers, rotors, etc.
You need:
LBJ UCA's (or ball joint sleeves from Dr. Diff)- you should have these already
73+ spindles, can be A body or F/M/J body
Caliper brackets for 10.87 or 11.75" rotors
Rotors, 10.87 or 11.75 (these will be large bolt pattern)
Calipers
disk/drum master cylinder
disk/drum distribution block/combo valve
You can get the spindles, caliper brackets, calipers and even rotors from a F/M/J body car, ie, Diplomat or 5th Ave etc all the way up to 1989, so those are usually available in the local yard.
Dr. Diff also now sells the 11.75" caliper brackets, which allow for the larger 11.75" rotors to be run (from Cordoba's, Volare's, Fury's etc) with the same stock calipers. Nice upgrade in stopping power, but you also need 15" rims to clear them.
Master cylinder, rotors, calipers, and rubber or braided brake lines are all best purchased new, the core charge usually isn't even enough to warrant pulling the used stuff from the yard. Just ask for stuff from a '74 Dart if you're using the 10.87 brakes, or a '77 Cordoba if you go 11.75".
Here's a list of cars with the right brakes. I've highlighted the ones that ran late, ie, the ones easiest to find in the yards. 5th Aves and Diplomat's are pretty common in the yards. The last set of Diplomat spindles/caliper brackets I bought at the yard were $60, might have been on sale, but you get the idea.
CHRYSLER CORDOBA (1975 - 1983)
CHRYSLER FIFTH AVENUE (1983 - 1989)
CHRYSLER IMPERIAL (1981 - 1983)
CHRYSLER LEBARON (1977 - 1981)
CHRYSLER NEW YORKER 1982
CHRYSLER TOWN & COUNTRY (1978 - 1981)
DODGE ASPEN (1976 - 1980)
DODGE CHALLENGER (1973 - 1974)
DODGE CHARGER (1973 - 1976)
DODGE CORONET (1973 - 1975)
DODGE DART (1973 - 1976)
DODGE DIPLOMAT (1977 - 1989)
DODGE MIRADA (1980 - 1983)
PLYMOUTH BARRACUDA (1973 - 1974)
PLYMOUTH CARAVELLE (1978 - 1985)
PLYMOUTH CUDA (1973 - 1974)
PLYMOUTH DUSTER (1973 - 1976)
PLYMOUTH FURY 1975
PLYMOUTH GRAN FURY (1982 - 1989)
PLYMOUTH SATELLITE (1973 - 1974)
PLYMOUTH SCAMP (1973 - 1976)
PLYMOUTH VALIANT (1973 - 1976)
PLYMOUTH VOLARE (1976 - 1980)