do you think it would be easier with the bumper on or off? the reason i'm wary about mounting it while the bumper is off is i don't want the lip to flex the bumper out of orientation and not allow me to mount the bumper back on.

also what did you use to mount the lip--just screws?
it came with 4 or 6 screws i can't remember now. but nothing for the rear
the mugen front has two holes in the middle section that hangs onto the lower edge of my bumper and then also has those tabs on the end. soo two in the middle, and two on each end.

i heard someone say something about using some kind of shim to hold the lip upwards a lil more idk.