Hi,
The following is a dumb idea.
I was looking around and found info on exhaust cut-outs. Basically its a T-shaped pipe that's got an extra opening for exhaust to exit through the opening, rather then through the cats/mufflers. This t-pipe would go right after the headers.
This looks like the cheapest alternative:
http://www.thunderracing.com/lt1exhaust.htm#CUT
Oh well, will see whatI can do. =)
Bye!
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Gautam N. Lad
http://www.cubicdesign.com
http://www.cubicdesign.com/mustang/