i finally got my splitter shipped so i could get it installed before a show next weekend. it really helps out the front of the car a ton in the looks department. i was going to install some support rods to make sure the front doesn't rip itself off, but it's installed very solidly at this point so i don't think it's necessary.
it installs by removing the lower splash guard and the ribber lip on the bottom of the bumper. then you use a slew of nuts/bolts/fender washers (5/16") to attach it in the open holes. it also has a set of brackets that you install on the subframe for the two rear mounting points.
pictures:
note that in the one bottom picture i needed to drill one more hole in the middle left. he forgot one of the holes, but the material (alupanel) drills super easily so it was a piece of cake to pop another 1/2" hole in it.