Dynomax Super Turbos Suck

Just a bit of info, the DynoMax center out mufflers still have significantly less backpressure than typical chambered mufflers so do not let the center pipe worry you too much. There is ample room for the gas to split and run around the outlet bushing. The longer 17748s are even better, relatively speaking, than the shorter, offset in, center out version.

Yes, regarding 300 HP through a single muffler, we found that you could run 12s with a large car with a big engine even through single exhaust. Runs much better with duals though. :)
Larger high HP engines do like straight through mufflers once you get up into the 400 HP range and higher, to the tune of a few HP increase at WOT.

Rumblefish, I have you some VT's for sale, made to fit right on the A-body cars (and that Magnum)! Reach me, let's talk [email protected]
Tom