With the 90 degree elbow (maybe two 45's), I'll be able to fit this filter:
https://www.knfilters.ca/search/prod...x?prod=RU-1785
That filter, when rolled out, is 15.7" x 8", so plenty big. At the same time, a 3.5" pipe, even with a 90 in it would not be considered as a restriction, considering the 68mm 1,100HP turbo only has a 2.7" compressor wheel inlet.
With a custom engine mount, there would not be a need to relocate the oil filter, so that may work out in the end. I'll build one for my own car for testing purposes. If all works well, it will be an option for customers at additional cost. The 3.5" piping with a custom engine mount isn't going to be cheap.
I also looked at removing the OEM engine mount bolted to the engine, passenger side. It looks like the exhaust manifold has to be pulled off for the aftermarket engine mount replacement. Luckly, that is the much easier one to pull off, compared to the driver side.