Edelbrock makes a super victor and an rpm air-gap.

The fastburns have the same runner shape as a vortec head. So a conventional sbc intake wont fit correctly.

I have run both these intakes on 350ci/330hp and 350ci/385hp crate motors in my ihra stocker, both work well. The only difference was about .03 slow in the sixty foot times with the open plenum. But the open allowed more rpm top end.

Hope this helps.

John