I have a 400 sbc bored .030 over my pistons have a 26cc dish I have have 2 sets in my garage so I plan to use one of them which is better I have a 882 76cc head and 461 camel hump heads 2.02 1.60 head the 882 have 1.94 and 1.5 valves both where tested at superior machine shop and both have some porting done but which would be better I am running a performer rpm cam 510 and 488 lift and I have a performer rpm air gap manifolds and will be runniung a 125 shot from zex plate system I want to finish this thing tomorrow so advice tonight will be great this is a play toy car I am still building my stang but this is jsut going in a 99 s10 I have