Jelag, I've got a couple of questions for you. Hope you can help witha little advice. I have an '03, HO, 6-speed, with a 4" exhaust. I still have the 3-1/2" downpipe on the stock turbo. At the end of the downpipe is where it expands into 4". I'm interested in the Pacbrake product. I've been told to put an inline, 4" brake rather than the brake that conects to the back of the turbo. The reason being that if you upgrade to a larger turbo, in the future, you won't be able to use the brake. Hence, the inline brake. Are their any problems using the inline brake? Any advice would be greatly appreciated. Thank You, in advance. Joe F. (Buffalo).