91 convertible 5.0 mustang with 230k miles. I bought it for $700 in rough condition Dec 2011. I threw in another $800 to fix the top, cooling system, tune up, as well as some performance upgrades and the car runs great.
Proper tire pressure, Weight reduction, Under drive pulleys, Electric fan, Shorty headers, intake, magnaflow mufflers, removed A/C, GT 40 ported manifold upper and lower. 76mm MAF, 70mm TB, 24lb injectors. Air dam, MPGuino almost calibrated...real close to actual