The brake pedal shouldn't be a problem... just use a ton of double-sided tape (black if you can find it) on the accelerator... thats what I did about 9 months ago, haven't had any problems at all. Besides, you need to be sure that your brake pedal is covered securely... gotta be able to stop quickly, but the accelerator really isn't as important...
... and believe me, with an ATX, the accelerator really isn't important
