I have xs headers on my 02 tl type s(from ss autochrome). For $100, they're the shit. SS autochrome sells a cat back for honda accord V6. Will this fit our car with minimal modification. Oh the cat back is only $180.

yes. it should. but then again, define minimal?

If your looking for more power it would be a waste, and will probably be too loud for your tastes. The accord exhaust is too short and will have to be lengthened by an exhaust shop.