I wouldn't even think about the Yates heads. I have a dished piston and am pushing 14.5 to one with the 40cc head. On top of that you'll be looking at about $800 for a custom set of headers. Your intake wouldn't work either.
Yates are for pretty much drag only cars, they flow like mad but, as Sky said, you really need to spin em' to get them to work.
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SVO siamesed 351 stroked to 417ci,Yates heads, solid roller,Trans King glide and a little blue bottle
of giggle gas.
My Car