I have a 96 Cobra with approximately 112,000 miles. I bought it brand new in 96 and have only made a couple of mods (4.56 gears and Flowmasters). Anyway, my problem is that I hear a grinding sound from the rear of the car whenever I hit the gas in 1st gear. The grind isn't bad if I take off slowly, but if I take off fairly fast, the grind is worse. I can feel it through the gas pedal too. What could be causing this? Gears? Transmission? I'm not a mechanic by any means, so I'm not sure what it could be. Any ideas from the Stangnet faithful