Sorry AD...had to do it, I'm so pround of that baby.
Zack,
The megs are cold rolled 22ga steel...always shiny and clean when new..the pipes I can do in 18-16ga DOM steel tube or Stainless. However the typical late model race system is a real thin Stainless..requires an expensive CNC mandrel bender. I'd think your best bet is to go with a used after market set. Some of the late model OEM systems are real good too..some all Ti now. If I had the equipment to build what you need I'd do it in a heartbeat.
However...I will gladly send a check for $100 to help you get a system...seriously. Gotta be some decent deals on ebay.
Late model stuff requires some very specific design parameters, the chances that we could get together and build something that would make the power of even an OEM system is almost nil.
Give me an address, I'll mail a check on Monday. And I'll follow up with more now and then when I can. It ain't much but it might help.
Tex....$400 for a Stainless Nordic Horn....make the check out to Zack and I'll get going on it.
JohnnyB