I recently installed a ls2/ls7 flywheel and clutch into my 02 ws6 firebird. After completing the installation I noticed that the car was definatly louder than it was before. I can tell from driving the car that the noise is coming from the front of the car. I was just wondering if anyone knew of some common exhaust leaks areas that our cars are prone to getting. During the install I had the car up on jacks for 3 weeks (I travel during the week so I only have the weekends). I'm wondering if letting it sit without the transmission removed for that period of time caused a gasket leak at the manifold or the Y-Pipe. Any information would be greatly appreciated!