This came with my car when I bought it and it was said that the car has a GN1 downpipe with 38mm external waste gate, so I assumed that it was from GN1. When I looked at their website they seem to only have/sell a version with a 44mm V-band type. I would love to know makes/sells this thing so I could possible get some replacement parts for it to avoid buying a whole Tial F38 replacement unit. Thanks in Advance for any info.