Would you cut 68 Form S Fish for 1 7/8 headers?

Kevin Jonker said
The problem is I have 1 5/8's headers and the massaged t/a heads exhaust ports are bigger than the header flange openings creating a definate restriction.

If it were me, I would not deviate too much from stock (body-wise), but it's your car.

Can't you take a die grinder to the headers, and sorta do a "gasket match" port job on them to match the heads? Is there not enough metal there?