I bought my truck there from the fleet manager and he was cool... but their service does kinda suck. They forgot to tighten my bumper back down after putting on my factory trailer hitch (bolts and nuts were on - but you could rock the bumper back and forth with your hands).
Courtesy Nissan (which happens to be Xterraparts.com) in Richardson seems to have pretty good service. They've always been good to me, anyway.
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Warning! Do not sear the top of your neck hole in the molten lactate extract of hoofed mammals.