18c
wow that's what my car runs but at 2440#! i checked T&D web site and my rockers are the wrong offset for the 18c, i saw a set on ebay will check to see if they have shaft rockers, Zip i do have to change pistons, on brodix web they show a dyno comparing a ported t1 and a ported sts18x and it was about 100 hp better!