I am in the process of buying a 2.5" exhaust system for my d22. However, the supplier can't source just an aftermarket dump pipe for a d22 3l td. He usually cleans out the factory dump pipe. But when I asked him if he could source an after market dump pipe he got back to me and said he would have to buy a whole kit at a higher price than what he can supply it to me for which doesn't help. Does anyone know where I can get one?