Cat-back exhaust systems are worth jack for power. There's just not that much of a restriction. 5hp. So you pick the system you think sounds the best. It's not gonna make a performance difference.
You can pick up 10-15 hp with a H-pipe though.
Get a 2.5" H-pipe with hi-flo cats if you live in a emissons controled state or a off-road H-pipe with no cats if you don't.
From my understanding V-force mufflers are a flowmaster rip offs. I have them on my car because they came on the car and I can't afford new ones.
-Josh, aka the tireburner
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1987 Buick T-type
1998 HD Electra Elide
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