I just bought a 94 Civic, it has a bad noise when the clutch is fully depressed. I think its the throw out bearing. The noise gets louder when driving... When you go WOT the noise sometimes goes away. Other thing is it might be a input shaft bearing on the tranny... How do I figure which one it is?

Also, at half-wide open Throttle, i get a BAD exhaust smell in the car. Enough to give me a killer headache... I assume an exhaust leak is present... Any other ideas?