
A small follow up. Waiting for the metric port to AN swivel fittings to arrive (thanks to Andrew for posting the Part Numbers). Then I am filling fluids and hoping it was worth it.
The exhaust and intake is fabricated. The blue elbow is from bimmerworld (they only had blue in stock) I am pretty sure it is an aftermarket sillicon reducer. It is a bit odd, the ID of the small side is 3.75" which is a very tough size for tubing. Probably fits the stock intake fine but if you are fabricating a straight intake for alpha-n it is tricky.
I struggled and figured I was going to have to use stainless or roll a flat sheet of aluminum - problem with that is I figured I needed a turndown bend. I also considered building it out of 3.5 or 4" both had issues.
I found the following link on ebay:
Apparently it is for a GMC Suburban. I asked the OD and was told it was 3.75" so i ordered it, turns out it was 3.75 ID which made it a bit oversized. We it just fit in the boot, and had the proper turndown and HUGE 6" filter with a venturi/ horn that fits inside. A bit ghetto but all in all it works. Hope this helps someone!
Thanks
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