Check the tyga site for the various builds they have done. Mine is similar to theirs. Trick seems to be to keep everything in the seat area below the top of the subframe with the loom run tight agaisnt the outer LHS side of the subframe. The black panel is actually a corrgugated plastic flat sheet that is bent into shape. It doesnt bolt into place but is more of a friction fit/underlap with the tail. I am thinking about making up a non-structural glass piece to replace this with that would bolt into place.
I'll try for pics tonight.
Cheers