Okay, how tough is it to replace the stock rear bumper and subcomponents (assuming no frame damage) on an 02 X?

I can't tell if the hitch is tweaked or not, but my bumper, plastic cover, and drivers side plastic corner piece need to be replaced due to a recent collision on 75... (no big deal, no paint work I don't think, I'm just wondering if it's worth doing myself, or letting Courtesy/Tony's body shop fix it all).

I couldn't find any measurements in the ESM to check for frame alignment or height. Looked pretty good by the naked eye however. The bumper basicly folded in when the Explorer slid over the hitch...

-=RB42