I have seen FMJ in my local yards. If I grab the spindles, caliper brackets, then I should be able to buy quality rotors, bearings, and pads, hoses, then I should have front discs with 5x4.5 bolt pattern?
Yup. And that's all I would get from the yard too, just the spindles and caliper brackets. Most yards charge about the same for a set of calipers as the core charge on a rebuilt set, so, you're better off just paying the core charge on the rebuilt calipers.
Here's a list of potential spindle donors. Nowadays the 5th ave's and the Diplomat's are usually the only sources that still end up in the yards, and even they get there less frequently than they used to.
These would have the 10.98" rotors
CHRYSLER CORDOBA 1975-1983
CHRYSLER FIFTH AVENUE 1983-1989
CHRYSLER IMPERIAL 1981-1983
CHRYSLER LEBARON 1977-1981
CHRYSLER NEW YORKER 1982
CHRYSLER TOWN & COUNTRY 1977-1981
DODGE ASPEN 1976-1980
DODGE CHALLENGER 1973-1974
DODGE CHARGER 1973-1976
DODGE CORONET 1973-1976
DODGE DART 1973-1976
DODGE DIPLOMAT 1977-1989
DODGE MIRADA 1980-1983
PLYMOUTH BARRACUDA 1973-1974
PLYMOUTH CUDA 1973-1974
PLYMOUTH DUSTER 1973-1976
PLYMOUTH FURY 1975-1976
PLYMOUTH GRAN FURY 1982-1989
PLYMOUTH ROADRUNNER 1973-1975
PLYMOUTH SATELLITE 1973-1974
PLYMOUTH SCAMP 1973-1976
PLYMOUTH VALIANT 1973-1976
PLYMOUTH VOLARE 1976-1980
These came with 11.75" rotors. Same spindles, different caliper brackets and rotors. Even better to find because you can run the larger 11.75" disks up front with the caliper brackets you'd get from these. Although, that means 15" rims minimum.
CHRYSLER CORDOBA (1976 - 1979)
CHRYSLER NEW YORKER (1979 - 1981)
CHRYSLER NEWPORT (1979 - 1981)
DODGE CHARGER (1976 - 1978)
DODGE CORONET (1975 - 1976)
DODGE MAGNUM 1979
DODGE MONACO (1977 - 1978)
DODGE ST. REGIS (1979 - 1981)
PLYMOUTH FURY (1976 - 1978)
PLYMOUTH FURY SALON (1977 - 1978 )
PLYMOUTH FURY SPORT (1977 - 1978 )
PLYMOUTH FURY SPORT SUBURBAN (1977 - 1978 )
PLYMOUTH FURY SUBURBAN (1977 - 1978 )
PLYMOUTH GRAN FURY (1980 - 1981)
PLYMOUTH GRAN FURY SALON 1980