I have a 1995 Mustang GT that I have done a few mods to. Steeda Tri-ax shifter, GT-40 intake manifold, larger throttle body, and exhaust. I have the stock shifter, intake manifold, and throttle body still in the garage. Is it worth it just to convert the car back to stock or just leave the performance parts on? I am kinda worried about the parts not adding any value to the car's worth. It has a little over 140,000 miles on it and I am looking to upgrade to an 03/04 Cobra.