Ivan's coupe: bodywork is done

[Ivan141]

Can anyone tell me what thread the rear bumper bolts are for a EU coupe?
I had my rear end out of the rotisserie this weekend in order to trial fit my bumper,
and I ran into a problem that I expect to be encountering a lot in the future: I cant find the bolts
anywhere. I remember them having very fine pitch thread for bolts that size.

Had to make adjustments to both arch corners for them to align with the bumper better, a word of wisdom to anyone welding in new arches: have the bumper in place when positioning them for welding.

While fiddling with the bumper fitment I removed the bottom bumper mounts (hanging from the rear pockets), and found that 1 was hiding more iffy repair jobs done by Bert, so I reskinned half of the pocket bottom.

Left to do:
-Still need to redrill 2 holes in the chassis rails for the rear bumper mount bolts.. got those in the wrong place.
-Weld captive nuts in the rear arch corners for the bumper to mount to.
-Make a small adjustment to the left bumper bracket to adjust for a 3mm offset of the replaced left rear chassis rail :-(