What brand of gasket should I use for intake/exhaust

what? the intake and exhaust are a single gasket. i have yet to see a two piece intake/exhaust gasket for a slant. and no you do not need to run longer studs. im running a remflex now but fwiw i ran felpro every time before this. never had a problem with them as long as my manifolds were lined up right.

Ah, so they use a one peice (didn't know that) but it makes sense now that you mention it.
I thought I remembered a 3 peice or something but that could have been most anything.
Or maybe I was thinking of the entire intake and exhaust kit including the squarish one the goes between the peices.