I believe I read once that Precision Paint will do the Halo mod, but it's a big job because the front cap needs to come off. Typically, proper x-bracing solves the problem, but there has been a few revisions to the mod. One that comes to mind is additional support from the genset to the frame. Do you have that? I'm sure a few others that have direct X-bracing experience will chime in. Good luck.
05 Travel Supreme Envoy 38DS04
CAT C7, 350 HP