I have done a few of these mods. But unlike in picture i go over the top in to the tip so its less visible and exhaust looks more stock that way. And i didnt use stainless steel pipe the cost would kill the whole idea of this mod and as far as welding i used toch brazing method. I would have to say the quality of a weld is not very strong but this part doesnt need to be, it just has to seal and keep the pipe from moving. So if you tryed to do a pull up on it it might crack or come off, but other than that it holds on strong. I had mine on my car for over a year and i went to auto crosses, one time to track (short) and did about 15,000 miles, not a single problem. this mod can be done to any boxster with stock exhaust
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