My stinger V8 has 775 and 1366 holes in it, but I use it on P55 Classy too because the mobo has 775 holes.
Send Fred Stinger an email if you feel like supporting an independent guy. They're expensive and heavy, but each one is hand made by Fred. He'll drill whatever holes you want.
I use a high flow 3 port version, but he makes a 2 port V6 too. Performance is similar to my GTZ.