I recently picked up this 1973 460 4bbl car and sold my 57 Chevy 3/4 ton. I already have the dash apart to replace, or design my own, climate control. Have any suggestions? The automatic one doesn't work. How about the smogged out 460? What suggestions for power upgrades? Cam, valve train, carburetor, boost? It's bone stock. I'm excited to work on it! And I'm happy to have your input.