OK, I answered my own question (by calling Bushwacker tech support). The brackets go on the front. Attached is the installation pdf for front (20139-02_r0) and rear (20142-02_r0). :cool:
I bought the Bushwacker fender flares and I'm installing them. I've got two ~6" long parts with a clip in the middle. No instructions - I'm not sure if these are for the front or back in addition to not knowing which side is which (they are different) and where the heck they go. Any advice...