fpgreen is a generally better setup than the rotated kits. more friendly to install and run “stealthily” --you cant open your hood with a rotated 30R and not have anyone notice. but you CAN have people miss the fpgreen.
mike himself said a specific rotated 30/or 35r kit for subarus is junk and he would never work with it again, for the simple fact that IT DIDNT EVEN FIT. the uppipe/downpipe fit very nicely, but the headers dont fit to the uppipe and so on.