what are those sections of the body on the rear quarters that always seem to crack?   hopefully this image shows up correctly   http://img405.imageshack.us/img405/9940/carmx.jpg

Not Mine:   http://www.ebay.com/itm/83-Mitsubishi-Starion-COMPUTER-ECU-ECM-MD061093-/170882907941?hash=item27c96a3f25&item=170882907941&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

Front Centric part number 117.91001   Rear Centric part number 117.46011 ($11 shipped at rockauto currently.)   -Robert

I have the head off and I was thinking about a hotter cam but what cam and what else do you have to change with that cam...first time doing this, thanks for the advise....I have a 20g turbo, full 3" exhaust..full upgraded fuel system. ported head..and both mainfolds..bigger IC...just so you know.