I had a 68 Firebird with 250, Clifford headers and glass packs, jeez almost 20 years ago now, and it was a cool sounding car, but it was somewhat more aggressive than what I am wanting to get out of the flattie. Not to mention that the cammer would easily spin 68-7000 rpm, while the Ford rarely sees 3000! How did you get 301 cid anyway, and what carb setup do you use?

Oh, and no kidding on the muffler recordings.
I think Flowmaster has one 3.8 V6 F body on their crossflow page. I had trouble getting it to work, tho.

Nick