CW, I've been working on that question for two months. A few weeks ago SVT finally told me an 01 catback will fit. They would not budge on the h-pipe. I called SVT and spoke to Steve last Monday to check on the shipping date for 03's and I asked him if there were any differences in the 03 manifolds compared to the 01. He said he didn't think so. The pic's look real close to the 01's but dimensionally I don't know. I called Bassani about 6 weeks ago and they said they were due to get an 03 soon. I went ahead and ordered a Bassani x-pipe and catback. A few days Bassani got in an 03 but they still can't tell me if the 01 x-pipe will fit. They are using the 03 to design a mid-length header and new x-pipe. I'm banking that the 01 exhaust will fit.