Engine displacement class is F. You are giving up 11.6% of the allowable displacement. (that's 2.67L, not 23.7, by the way.) Think about a stroker crank. If you're running alcohol, you're a fuel altered, or a classic fuel altered. Classic classes do not allow aftermarket EFI. Is yours mechanical or electronic? Altered allows covered grilles and rear spoilers, and you'd give up a lot of speed if you don't run same. On gas, if body is stock, you're a gas coupe.