Prostar cab insulation

[09pornstar]

Any ideas on how and what to use to insulate the exhaust pipe or the cab oround the exhaust on a prostar? Its annoying when outside temp is a nice 70F and inside is in the 80s for hours. The metal base of the passanger seat reached 115F couple days ago in TX. Now ac pipe burst and im in IN, its gona be 68-70 tonight and im sweating balls here friggin 86 inside