If you are just going to sell the car then don't bother modding it. All that does is restrict the number of buyers. If you still want to:
Only start modding if you have a way to check for KR. Scanguage II is cheapest.
Don't bother with a 160 t stat... go with a 180 if you feel the itch. Make sure your PCM is tuned to turn on your fans sooner(yeah, that means getting a tune).
Headers off e-bay are 200$ and work just as well as the 500$ ones.
That brings the tally up to 600 and that is without the pully drop yet(another 90ish + a pully remover rental)... Cheap enough? If not you really should consider keeping it stock. The more mods a car has the more stuff can go wrong. But I think thats because the owner tends to be harder on a modded car... to get their monies worth...
If only there was a place all this could have been read. http://www.grandprixforums.net/safel...car-17482.html (Safely Modding Your 3800 Powered Car!!)
I apoligize for any offense, and the slight sarcasm. I'm an evil cynical troll aparently tonight.
