im thinking about getting some hooker headers, the size is 1 1/2. is this ok for a 305tpi, when i add some head and cam to the picture is this header ok, also it comes with 2 1/2 inch collectors if i wanted to buy 3 inch collectors could i pick em up at an autozone type place. just wondering. and about hom much power and 1/4 gains on a guess would you say with my mods

 

anybody

 

I don't think Hooker makes 1 1/2" headers. Mine are 1 5/8" primaries into 3" collectors. Shorty style. Should be worth 20 or 30 hp with a good cat back 3" system.