K: I went with the EARL's Gasket. It is full size , so if you want to run a "ported" exhaust port , you don't have to modify anything with the gasket. It measures a full rectancle 1.25"X1.5". They will work fine with Bassani Headers.
BTW, I have a brand new set of Bassani's(gaskets) if anyone is interested.
Later
STeve