oh man, nasty, how did that happen? very hot exhaust? is it missing the heatshields under the plastic boot tray?
The battery tray isn't too much new from the dealer, most e82 coupe's have the same carpets, plastic tray and bootlid. Wiring should be the same too, the positive cable is longer on the 1M than 135/others though.
Alot of the part numbers are listed here on the 1M conversion thread -
clicky
good luck.