to get my car up and running im going to drop in a core motor until i figure what to do with the bigger motor im going to install my old powerdyne supercharger and 52 mm tb car also has hooker long tubes will my mufflex single 4 inch be too big

 

Other than the fact that you will be dragging around 45# of excess catback.... there is no problem. There is no such thing as "too big" exhaust.

 

thanks for the info didn't know if i would lose too much back pressure