I just bought a 1965 chevelle and all of it is original. I also has no stereo I wanted to know if I should put a customized harness below the dash board so that I wont have to tear up the original dash for the new stereo. Also there is no wiring at all for the stereo, so should I have it done professionally or should I try and do it my self? Another thing, if I do put a system in it will it affect the value at all?:eek: