I recently bought a very straight, all original 1964-1/2 mustang coupe. I picked it up from the original owner, who took excellent care of it. It's never had any accidents, still has the original 289 engine, which has had I think one rebuild if I recall. There are just a few minor rust spots. It has the long black and chrome center console running down the center. They had a complete front bench seat, which was not original to the car, but I picked it up from them just because I really liked the idea of having that option in the future, even though the center console is a pretty attractive piece to remove for installing the seats. My question is this. I'd really like to keep the car as original as possible, but I'd also like to get a little more out of the engine (which is out of the car and stripped down to the block for clean up). I am considering installing a performance camshaft and possibly some other hi-po parts, but I'm hesitant to get too far away from the original setup. It has an original rally pac. I'm trying to figure out what modifications I could install on the engine, including the heads and pistons, valves and what not to get the most out of the engine without compromising the value of keeping it original. Cost is not a huge concern, I'm just looking to get better performance out of the engine since I have it out. Any suggestions to what I might consider doing to get the most out of the engine without destroying the value of its complete original state? Anything suggestions would be greatly appreciated.