JM,
You forgot the HP factor, you'll need another 100 hp to make as much noise as the Turd.
Cranky
BTW, Making your own open sidepipes.
The least expensive way to go open pipes is to cut your existing muffler off just at the end of the collector. Buy 3 sets of 3 1/2" weld on flanges from Hooker. These are a perfect fit for most Cobra sidepipes.
Weld 3 1/2" collector flanges to muffler and collector.
Now you go to the electrical supply house and buy a 3 1/2" EMT 90 degree sweep. Also a perfect fit. You use a power band saw and cut this 90 into two short dumps and weld on the 3 1/2 " flanges. Makes a perfect short dump with a turnout.
GUARANTEED TO BLOW OUT YOUR EARDRUMS
Here is a shot of mine.