I found this on another site.

200 CI ford
264/274 camshaft
headers
dual 2" pipe
H pipe
flowmaster 40 delta flow dual in/out

"right click" and "save target as"
http://www.cquesttechnologies.com/ford6/flowmasters.wav

I am qurious now, I may try an H pipe before I spent money on a flowmaster, the fella that does my exhaust said he'd make and weld in an H pipe for $45, maybe it'll take the edge off and deepen the tone?