For all of you out there still running an ATR extenal gate downpipe, and need a gasket to seal it to the turbo exhaust housing, I have a great solution. I have purchased a gasket from SE Turbo that worked very well. I since have bought some header gaskets from REMFLEX. They worked so well, I called and asked them if they could make me a downpipe gasket. I sent my gasket from SE Turbo to them and they made me three for $15.00 each. This is not an advertisement for REMFLEX as I have no affiliation with them, but they make wonderful gaskets and this may help someone out there that has the same problem as me. They even gave this a part number and I guess they will add it to their list of gaskets. The part number is RF18-008. If you haven't already, check out their website REMFLEX
Please excuse the picture quality, it's from my phone...it's all I had.
Please excuse the picture quality, it's from my phone...it's all I had.