how legit would this look

the part that is white have it cut out so you can see your exhause, just cut accross the top of the exhaust openings to make it look clean, and you can see your exhaust if its got some bling :-)
Images by ThinkDiesel

 

it would look stupid.

 

why not keep your stock rear? lol

 

i think it would take away from the look and design of the bumper, besides it looks like it would show through fairly well through the center vent, which you could always just not use any mesh if you wanted to show off your muffler(s)

 

I love that bumper

 

I wouldnt know how to paint it, probably as you have it though.