+1 for the rivnuts, got plenty of them on my car, sooooo much hassle saved using those bad boys
A word of warning Vendella, if youre replacing the OS rear chassis rail, dont look too closely at the other side or anywhere else or the next thing is you will be asking to borrow my spit. We all know what happens next.....
Sorry I cant check the bumper at the moment as its stored at my parents.
Have you undone the bolts are the sides yet?
If the 4 main ones are knackered the side ones will be terrible as they are crappy pressed captive nuts, I had to cut them out.....