is your bumper straight or has it sagged at the bottom like most?

as these are a very tight fit, mine was a pain and my bumper is completely straight

but i got there in the end, easier with the bumper off

and you should of done it before having it painted as then the holes are already in the bumper ready for fitting

i just used self tappers in mine and is one very well

i can get pics if you like as the bumper is off the car