11 sec. build cost?

I cant turn the stereo down in my dart lol...I was looking at ways to cut weight when over the winter and pulled it out along spare, and jack. Before I took my stereo out though I often found myself turning the volume knobb down on the stereo thinking somehow it would make my car not so loud. I would always answer the phone and reach straight for the volume knob even though the radio was not on. I got all the built sheets on excel finished and it looks like for the build I want its going to be about 4 grand. Hopefully going to swap meets can take a some off that. BTW there is a all mopar swap meet at the ohio state fair ground on feb. 23 if anyone is near that. I am making the 4 hour drive from school to try and hunt down some brakes and other random crap I really don't need.