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Joined: Feb 2001
Posts: 13,748
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
If you left the stock piping at 2.25" it would sound like your car didn't have a muffler. I would just look into a complete cat-back. It will sound much better. Open hedders on a stock 305 TBI sound like utter garbage.
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