Hey there snake.
Sounds like a nice car. I'm going to say to go back original as close as you can. Modifications will only cost you more cash and maybe more headaches as well. I hear ya about the "NUMBERS MATCHING ONLY" crowd, although I do love a numbers matching car, don't get me wrong. My heart/love is with pro-touring cars hands down. They looks the best, handle the best and run the best in my opinion.
What kind of project are you looking to get into?
Good luck with the sale!