Ya might want to pick one up just in-case!
I put the TRD exhaust on my 2001 Tundra and that gasket was shot. I had to get it from a Toyota Dealership, it was like 5 bucks.
I am telling you this because when I put mine on, that same day I helped put my daughter's TRD on her 2002 Tundra. Hers was ok, mine was too bad to try to reuse.
Dan
BTW....think there are some pics of it in the Photo Gallery under Exhaust & Pipes category.