Regarding the belly pan vs. exhaust bits:
- You can't see it well in the photo, but the front section is cut out where the exhaust down tube goes horizontal into the catalytic converter, and also a bit aft of it. There's about a 1 inch margin around the metal.
- basjoos often gets asked about his full coroplast undertray. He's had no heat related issues. Search his thread if you want specifics:
http://ecomodder.com/forum/showthrea...0-a-290-8.html