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The front chassis screw is pretty robust (it's long and goes into a lot of structure in and around the steering that is also pretty robust), but that screw in the back is going to force a TON of bending loads onto a piece of plastic that really wasn't designed to take that kind of load. Even with a bunch of washers to spread out the dead load, man....

I first just tapped and mounted rear screw to rear chasis supprt. That ended up pulling out . I then through bolted it and have yet to have any issues with mounting or rear brace dmage. As I have stated I am the lawn dart king and have tested the mount vigorously

If I can get another piece of carbon, I'm going to build one that goes from the front shock tower to the rear shock tower - there's a ton of structure to offset the brace.
Feel those towers, they seem to have alot of flex in them. I was thinking about cutting some cf sheet just to mount up against them as they seem pretty flexy for some figidity. Not sure if you would get the same chasis stiffnes from a high mount . try it and let us know .
My RPM arms rub slightly on the CVA's near the rear stub axle. I will clearance them accordingly, but doubt they would hit at all if I didn't have the extra travel in the truck.[/QUOTE]