I have a nice USED set of SBC Hooker Super Competition headers for a GM G-Body. They are 1 3/4" primary diameter, 30" primary length with a 3" collector. Hooker PN is 2242HKR. The # 7 and 8 primary tube goes through the fenderwell. This pair also has an evac tube bung welded to each collector. They have surface rust, but they're still solid. They go for over $500 new, I want $100 FIRM!