Thanks for the feedback. Elbow 1.0 had 2 cuts. My geometry skill necessitated elbow 1.2. Version 1.3 got an extra 4"on one leg, but since I cut the hose to try and make 1.2 fit, the end of the outbound hose was in a different place(extra points for your alignment comment) making the angle of 1.3 wrong. I thought about two cuts for version 2.0 and discussed it with the guy at Marine Exhaust. Since the i.d. of the turbo discharge is only approx 4", the 8" dia. hose will have very little resistance from the single cut. He also wanted to put a 6" mixing bell on the end of the riser, but the muffler and tail pipe are 8" so, no go.
As to the clamps, the original elbow similarly had about 6" in the hose, and was not too difficult to separate plus the alignment/room issue is what started this exercise in the first place. Sooo, if its good enough for them ...
The folks at GB were big on overkill.
Hobe Sound, Fl.
GB 46 CL