64 intake on 65 cast heads and intake.

MATT BIG and another have used 64 aluminum intake just gotta block exhaust cross overs and portmatch if that bothers you

So my question: ive done the swap

The gasket blocks 2 small squares and coolant passage from cast heads

Without port matching, do i have a performance choke going on?

Ive the poston 110 cam and 4bbl rochester

May throw turbo 350 and gears

Any help anyone?