I purchased a set of patriot performance vortec heads(#2151) to put on my 357 with a sdpc tpi intake manifold. I was told to use fel pro #1206 or #1266. it fits the heads but doesnt work with the manifold. ive already purchased 3 diff gasket and im tired of playin the guessing game. so if anyone has any idea im all ears. thank you very much in advance

ps-the intake is in the machine shop waiting to be ported to match the intake port on the heads

 

The Vortec version?

 

yes its the vortec version. i contacted the machine shop and told him i could not find a gasket that would work. so he said hes gonna look into it for me. im new to a rebuild(esp. with port work) so im just gonna leave it in his hands. unless you have any ideas?
the intake port size on the heads is 2.21 x 1.31