4spd, 6 grand, wheels up......doesn't get any better then that:).
My concern would be the dent in the tube may now be a weak spot that may not take as much abuse as before.
Although the back brace would probably absorb a good amount of the load.
Yes, that was one of my concerns too. I was thinking that it might be ok since the new perch goes 1/2 way around the tube (and is fully boxed) and the addition of the back brace...but I don't know.