Very cool. I plan on doing something similar that also wraps around the corner and down to the body, like most sports racers have (e.i. Radical, Norma). I recommend not drilling holes in the main hoop. I'm thinking of some kind of internal clamp, the shell rivets to the clamp which has a bolt behind the bar. The shell then has a hole to access and remove the bolt. I haven't drawn any of this up yet so just thinking out loud.
Where did you get the strut cover?

