IF it were me, I wouldn't just do bolt on. Right now I am running NA, and I am in sort of the delema you are in. I think if I were you I would sleeve it, bore it, pistons and rods, hone it, clean it up. Make it a rock solids engine, then start putting in the bolt on stuff. Take your time and do everything right though. Don't jsut say, " hey I got money to burn , ummmm let's buy a fuel rail", because your car may not even need it if you aren't going to pump enough fuel for it. You need to sit down and see what your plans are.