What car can i get spare parts from for my mustang...I look on the net at SacramentoMustang.Com and the parts were kind of High.. The parts that i need are Disc brakes rotors,spindels,lines and brake booster front and back . I also need AC/Heater parts.
If you need disc brake parts, forget a donor car. Most Mustangs, except for a few, like the GT had drum brakes. And they were manual disc brakes, so they didn't have boosters. Sounds like you are trying to do a conversion, try the above mentioned Granda swap, much cheaper, and the brakes are better than the old dual piston style calipers that the '65-'66 Mustang had. The heater parts are so cheap from Mustang vendors it's better to save your bucks and just buy new. For the A/C, most Mustangs of that era didn't have A/C, so you likely won't find one on a donor car.
The 1965 Mustang had drum brakes. If you are trying to restore your car, one often overlooked source of parts is the 1964 -1966 Ford Falcons! They had the same drive train, suspension, and even the same dash!
Brake lines are easy to replace, using lines that are available from any parts store, and bending, cutting and flaring to size! If memory serves me correctly, and you want to upgrade to disk brakes, you can use parts from the late 70's Granada!