I made sure the car was in good shape from a stock perspective before modifying it. I made the modifications in a way that the car could still be returned to stock with relatively little effort should one choose to restore. I purposely did not "hack up" or modify body parts or anything like that.

 Car is an 85 GS, red, no sunroof, 12a rebuilt at 120k. Currently at 160k miles. Rust free. This was a very nice daily driver, and I almost hated to modify it.
 Weber 45 DCOE and manifold. The oil metering is disconnected so I premix with the gas.
 Carter fuel pump, Holley regulator and gauge, plus misc parts for install.
 Racing Beat Header and "Street Port" exhaust.
 Eibach springs: Fronts are 260 lbs or so, and rears are 145 lbs or so. These are not coil overs. These are the Eibach Pro-Kit springs. They are slightly harsh on bumpy roads but tolerable.
 Shocks: front Koni low pressure gas, rears Tokico blue non-adjustables.
 Sway bars: Suspension Techniques 1-1/8" front, adjustable rear 17mm, I believe

 Replaced front control arm bushings and tension rod bushings with new, harder than stock rubber ones.
 Replaced all original rubber brake lines with new NAPA lines.
 New front brake pads, Axxis Metal Masters, Rear shoes semi metallic.
 Replaced all fluids with performance fluids or synthetics.
 Swapped rear open diff with Limited Slip Differential (stock 3.90 ratio). Only swapped center section (aka ?pumpkin") as it was cheaper and easier

 New radiator.
 13x5.5 Stock Rims with good tires.
 13x6 Enkei Gold Mesh rims with BFG R1 tires. Very nice, but I broke one of the center caps. Might be able to find one on eBay.
 AC was removed when Weber was installed. Still have all parts and will include with sale.
 Electric fan replaced stock fan.
 Front wheel bearings, tie rods, and idler arm replaced.
 Steering column replaced with one from 90k mile car.
 Rear axle bearings replaced.
 Jensen AM FM CD Deck and speakers.
 Everything else is OEM stock as far as I can recall.