Heat is no problem. The body and the line-x block anything noticable from the transmisson or engine. Probably a fair bit louder than with the carpet, but definetly not bad. I can't really make a comparison to carpeted floors though, I haven't had one for a while. I've had it stripped to the bare floor for over a year now. I've also got a 350 under the hood, so it's probably louder than the stock 6 cyclinder anyway, but with the line-x it's a whole lot quieter than when I was just riding on the bare floor. For example: before, I didn't have or want a radio because engine noise and tire hum was just going to drown it out anyway. Now I probably just have to turn it up pretty loud at highway speeds. Anyway, for me, no radio, no problem.
Hey Beans, looks damn good.... How's the noise level and heat?
look up