Dennis,
Didn't Flyboy do something like that to his exhaust?
4-1 gives you more top end hp. 4-2-1 will give you more bottom end torque and mid-range.
There are a few web sites that can help with lengths/sizes you might want to review because you get more torque with longer primary pipes usually.
Let me know how it goes!
Everet <img src="/forums/images/graemlins/patriot.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" /> <img src="/forums/images/graemlins/kewl.gif" alt="" />

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