Post your sound bytes here.

Engine size: 400 B series engine, a 1978
Cam size: Dead stock internals I think the OE cam is rated @ 260 - 268 duration, lift unknownHeader brand and size: Headman 1-3/4
Pipe diameter: 2 1/2"
Cross over - X pipe, H pipe, none: H-Pipe
Muffler type and size: Hooker Aero Chambers
Tail pipes, size. 2 1/2"

Sound bite on site; click here; http://youtube.com/watch?v=q3OTEn5mrCs