I went the aftermarket route. (still in the process)..I didn't want to wait around for someone elses cut outs, plus they would have to be cut right or you're screwed...I'm replacing the taillight corner also so I wanted new sheetmetal all around...my quarters were pretty bad though..
*edit*..just a friendly warning, be aware that when you start cutting out full sections of metal, one often leads to another!! and the aftermarket ones are really thin..good luck with your choice!