An old post this one but I thought I'd post a reply in case anyone is looking to do a gearbox oil change at home and might be put off by some of the comments around here. It's a straightforward process and can be done on a DIY basis job with no special equipment and some good common sense. Main thin...

Might be worth trying some of the Jag breakers, I got replacements at a local scrapyard for next to nothing, had to take them off myself though, but that's easy enough.

Cheers
Dave

Aye, I did notice that, just though I'd post anyway. Certainly agree with your comments, however there were some silly design flaws in the construction of these cars which do exacerbate the corrosion issue. The rot in my car, even given it's age was worse that I would have expected. Still, with that...

Had the same issue with my 308, welded up both sides. Also had lots of corrosion at the sill ends on all four corners and part of the floor on each front footwell needed patching. Both sides of the car had corrosion where the floor meets the lip on the sill, it wasn't completely gone but bad enough ...