My 73 challenger is an original numbers matching car, with a 318, and a pistol grip 4-speed. The only thing changed before i bought it was, they had painted it plum crazy and put a black vinyl top on it. The original calls for a white vinyl top and B1 light blue. They had put a RT hood on it also. I have a little bit of rust control to do, before i even think about paint. I do not like the light blue/White top. I will probably keep this car for many years, so i will probably paint it the color i want. Will it really be that big of a deal for resale value? I would think that 15 years from now it probably won't matter much. I do not see many regular 318 cars on C.C., have most been cloned out or were there not many made?