Late to the party I'm sorry .. but ...
my MOT tester, who I trust, said it was a fail due to the visible corrosion around the rear seat belt mounting point, and he suspected that once the cill covers were removed he'd find a load more.
When he phoned me it was quite simple, he reckoned to patch the bad bits, both sides, would be between £300-£400 as he could not tell what was good metal until he started work, and the unpatched bits would probably only last a few more years.... or bite the bullet and replace the whole cill on both sides for £600, known outcome, known price, which, as you know, was my decision.
Many thanks
I would take your choice as well, my issue is do I wish to:
A) Find someone reliable/trust worthy to do the job. There is Fox Vauxhall in Camberley who have been good, but I suspect they would want more than your quote.
B) I need to make a decision if I want to keep it, because on-top of that £600+ I would want to LPG it, so £1.2k - Throw in self levelling shocks, few other bits. I'm looking at £2k easy.
That's a good chunk of cash towards an XF.
In real world though, I'm limited. I need to wait for the Fox/Sky deal to reach a conclusion.
Fox Purchase = Decent wedge of cash, so can buy XF-S.
No Fox Deal = Fix up, bit by bit.