If I could recommend one thing, before you start blowing the T2 gasket pick up some Inconel studs and Stage8 locking nuts from Flyin’ Miata. The studs don’t stretch over heat cycles and the nuts can’t loosen.
Ohhh okay okay, yeah those actually have better exhaust flow but you have to get dampener for it because silkroad says the long type manifold is known to crack without it