I read your post yesterday, and meant to respond, but got distracted!
Looks good, and I for one, will try this.
The mod you made to cushion the leg would have been my first suggestion!
Second would be move the metal strapping attaching the pipe to the PVC to the inside of the PVC pipe to lessen the chance of a burn maybe?
Now I see why you spaced the PVC pipe so far out... to get the genset compartment door open!
I dont have that prob, as my exhaust travels about 6' rearward and attaches to the main 454 exhaust.
You can just about see it above the Banks tip in this pic..
The genset is in the compartment with the vents fwd of it.
I will have to figure out a different way to attach it to the body...