All I can say is, this thing is perfect. It is 3" piping and has a huge cast bellmouth. In my opinion the cast bellmouth has to be better than the others that piece pipe together because it does not have rough edges or welding slag inside the pipe. In other words it is a very smooth transition into the 3" pipe. It fits perfect and all of the attachment points line up perfect just like the factory pipe unlike most of the other downpipes that I have read horror stories about. Oh and it is fully polished so it almost looks to nice to put under the car. Turbo lag in 1st and 2nd is greatly reduced(it spools almost as fast as my wifes turbo Miata with a ball bearing T28).
Go buy one!!!!!!!!
I bought mine from Garret at World One. His price can not be beat, and he is a nice guy that runs a great business.