Purchased running, but in rough shape in 2009. Since then I have replaced every major system in the car, and most minor ones.
Removed trunk luggage rack and all emblems.
Chrome Ponies. V Speed Rated Tires (have gotten into H range, but haven't tested them at the full V rating yet).
306 with Cobra intake, E303 Cam, GT40P heads with valve job. About 100 HP more than stock.
Maximum Motorsports subframe connectors
Replaced "porno red" interior with black leatherette, black carpets, and dyed interior pieces.