How fast have you gone with exhaust manifolds?

That's pretty awesome!

Did you ever try it with headers and the same combination?

What kind of manifolds were they?

We used a set of shorty hedders which are on there now and it runs a best of 7.36 @ 95 mph 1/8. It also has a 4 ft. tube that connects to the shortys because of the fumes, this is just to get it past the drivers compartment, and not for any other reason.

As for the manifolds they were standard 360's.