They ****ed up my boy's del slo, they take forever, they overcharge, they get the wrong parts, THEY SUCK...
Do a search and see what all has been said about ASSylums.
:edit: don't get a fiberglass bumper, it will undoubtedly crack or distort at least a little, and if you hit a single curb (or raccoon, as was the case with my friend) you can kiss it goodbye. Get a urethane bumper instead.