Thanks, i mounted this bumper last september, but i didnt really like removing the rear bar.not that deep at all, just about a 1 inch trim on each side. you also have to cut grooves in each of the middle part behind the lower part of the vents. there's a part of the rebar that has a ledge going down, you just have to trim that part on the fiberglass aswell or just trim that piece off on the rebar. hope this helps
Im gonna have a second look at it this spring since the car is tucked away for winter now. Probably gonna put a tighter net in the openings that doesnt show as much as the ones that came with the bumper - fom distance you can hardly tell there is a net in the openings now.
Pics of my installation in this thread: http://www.nsxprime.com/forums/showthread.php?t=96140