Rusty/rubber fasterners holding rear bumper to boot floor

[Coupeboy]

Before I take a grinder to the 5 rusty screw heads holding the rear bumper to the boot floor, is there a technique to holding/removing those stupid rubber nuts inside the boot? I am changing to stainless fasteners (OK I thought I was doing the easy mini projects first!).

[dapinky]

The approved technique i used was to take a grinder to the bolts, throw away the broken rubber rivnuts, and replace with M6 stainless nuts and bolts!!!!!

(on a serious note, grind carefully and don't spent too much time on each one, otherwise the heat will build up and damage the bodywork - take your time and its straightforward enough).

[Coupeboy]

Thanks, I suspected that is the answer. I purchased some M5 fasteners (screws and nyloc nuts) as per the Wiki. I wondered if the rivnuts are supposed to provide some sort of weather seal but seeing as I (try to) avoid rain it isn't going to be a problem. Cheers