corksport.com
they are local to me, which is the main reason i bought them (no shipping made them the cheapest 'good' fenders).  material?  um, fiberglass i guess.  i dont know anything about materials or body kits or whatever.
CS fitment is great and clears a whole lot of tire.  i guess what it comes down to is- if you want to go lower offset and have a vent, go CS.  not quite as wide, but no vent, go Shine.
this is the only other decent fender pic i have at the moment (hi def and cropped for usefullness)
btw thats not a gap between the door and fender.  my door is dented in.