Hello everyone. This is my first old car project. lm a long time foxbody builder who now has a 66 Fastback. l am restomoding it complete with 5.0 EFI and AOD trans. The car is an original 6cyl so it is 4lug with the peanut rr end. My question is, from what yr and make car/cars can l source a better rr end and spindle rotor combo from? And maybe even a disc brake 9" from an old Lincoln? l just dont want to get rr end that is too short or too long in width. Same with spindle/rotors. Any help/suggsetions will be greatly appreciated. Thanks so much.... 
