Very nice to see the run test. Very professional set up. Spent yesterday night fitting a similar set of extractors into my car- - very very tight on the LHS. They are in . Barely in.
I am looking at increasing the final pipe run diameter to the rear resonators which is currently 2 inch.
The front flange on your extractors looks 3 1/2 inch - what do you reduce down to for the rear pipe run - 2 1/2'" or 3" ?
Any trouble threading that through to the rear without clobbering the drive shafts? Do you know what the maximum diameter you can reasonably squeeze through is ?