[vector1]

just wanting to replace heads, afr is the standard for the 23* jobs, but you need to talk to someone like kc and match everything, what is your compression, cam specs, carb, intake, useage. prob end up with 205's, unless you do 1/4 mile stuff then 225's might suit you better, although streetwise would prob suck. you need smaller ports to keep air/fuel velocity up to fill the cylinders at lower rpms and provide vacuum for your carb although this is a function of cam specs also. afr website has listing of lots of combos and a shootout of different heads and output at the bottom although prob biased. you could go to engine builder websites and see what they are putting on their strokers, give you a good indication. hth