I whipped the wheels off on the ramp and started loosening the rear subframe
once that was off I decided id take another look at the split in the bottom of the passenger side rear wheel arch.
Turns out its not just split, its a bit rot.
nothing to do but cut it out
I made up a little plate, I even cut the square little hole for the plastic bung that I don't know what its for. Then welded it in and primed it.
Hopefully tomorrow ill have a look at the subframe and start cleaning it up.