Trick Flow 440 heads, The Real Deal?

IQ52 said

The rocker arm pedestal is .600" taller from the head face to the rocker shaft saddle.

The intake valve hits the cylinder wall of the 4.250 standard bore at .770" when using a 8519PT1 head gasket. The exhaust valve doesn't hit the wall before the retainer hits the valve seal at .850".

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looks like these are going onto my 383 soon as i get them back!

what head gaskets do you recommend for the 383 with a .030 over bore ( 4.280). the 8519PT1 says it is a factory replacement and not intended for performance use. or are they just fine?

What head bolt kit do you recommend? I like to use ARP when possible.