My recommendation is toss the LM, CATS don't help much with longtubes and a LM. Right after my headers went on I dropped the LM for a Magnaflow. Still have no CATS and it is more then reasonable sound wise.
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-Nick
9/11/01- Never Forget
2002 Pontiac Trans-Am WS6 # 206
Chasing 10's
469RWH/437RWTQ
11.05 @ 123
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