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Okay one at a time.
1. Exhaust single over the dual set-ups is your question, well other then saving a some weight no real advantage there. Some people like the look of single & some like the dual.
2. Considering the car as you say is lowered I would assume the problem is in the suspension, check the components in your front suspension.
3. On the noise in the trans when the pedal is pressed, maybe a throwout bearing failure.
That's a fair amount of miles on the car, has the car had a rebuild? If not you may be looking at one soon.
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Hybrid Mode
