September 3, 2012 6:16 AM PDT
So, in the first post, I see a Sportster with a Green frame and tank and another Sportster with a Maroon frame and tank.
Are you building the Green one and using the Maroon one (along with the Buell) for parts? You probably stated that somewhere, but I missed it.
If that swingarm doesn't work for you, I'd imagine an XR1200 swingarm would be much less and fit in there easier. Just FYI.