Well your gonna lose torque with 3" pipe. It's too big IMO, for your combo
The H-pipe makes more down low and the X pipe makes more up in the RPMS. I've heard to use H-pipes on chambered mufflers, and X pipes on straight through mufflers.
Don't trust sound clips, your computer isn't gonna reproduce the sounds right.
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1987 Buick T-type
1998 HD Electra Elide
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