where to buy bumper for nissan pathfinder??

i've got a 97 pathfinder that was in perfect condition until someone did a hit & run on the front. i need to replace bumper, bumper cover & driver side fender flare extension.

is there any place that is recommended to buy this from? i've been googling & found a lot of places that sell it really cheap (like autobodypartsonline.com), but they are questionable to order from according to other things i have read. the body shop i took it to wants $550 for the parts alone.

where's a good recommended place i can get these parts from? opinions on whether or not i should get geniune nissan parts or aftermarket?

thanks!