what turbo headers for a 318?

You can buy the bends and cut and weld, and yes the flange was welded to the pipe, he made some braces off the heads to support the turbo. 02 sensor after turbo, atleast I think 12inches away from the outlet. You can always try the swap of the flanges, or swap the rear exit headers and have some elbowsort made or percision turbo might make one with the flange, you can always brace off the frame engine anywhere you like, if you look into the elbow it would just need a vent band flange welded the to header to connect to the eblow, something like this

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