hedman hedders for chevy 2
 

was wondering if anybody has tried a set of hedman hedders #65196 for a 66 chevy 2. they are stepped 1 3/4-1 7/8 with 3 1/2 collectors. how they fit?what kind of performance gains. i had the 1 3/4-3"collector chassis exit hookers. trying to get a little more flow.