Sound Insulation

[charisma]

I have a Westfield Megabusa that is loud. I want to make the car quieter. I want to be able to drive down the road and not cringe everytime I press the throttle pedal down slightly.

At the moment I have a Techcraft silencer that makes the exhaust quiet enough, but what I really want to do is reduce the 'under bonnet' noise.

There is a lot of induction noise that I can attempt to silence with various air filters etc, but my first stab at this noise problem will be with under bonnet sound insulation.

Does anybody know of any suitable material and/or supliers, the insulation needs to be heat resistant obviously!

[charisma]

I can't afford to buy everybody earplugs.