She's driven it for a year now, and other than someone driving into the NSR door a while back (thanks again to Doc for the spare door) and the rear exhaust box falling off, it's been a great motah.
MOT's up, so I lend her my "spare" BX (the DTR turbo) while I put hers through an MOT. I was told it would need the rear exhaust hanger welding back on, as it was loose. No problem.
Except, like all easy jobs, it's not as easy as that:
This doesn't look too bad:

But after a good prod, it looked like this from inside the boot:

And after a very good prodding, I found more rust just next to the spring-hanger:

Now... I'm a great believer in the statement "if there's rust, there's more rust. Given that one side rear wheel arch has rot in it... I wonder what the other side is like?
Not much better. This is a photo of the auxilliary tank, from within the wheelarch. The cross-piece that the fuel tank strap attaches to crumbled away in my hand:

There's also some corrosion between the aux. fuel tank and the rear crossmember:

On further investigation, it's also going to need a small patch on the NS front inner wheel arch, and it needs the other rear arm bearing doing.
This is all a bit of a shame, as the car itself is still in fairly good condition. The interior is lovely, The mechanicals are all in fine fettle, and it's even an AirConditioning model (albeit not working at the moment) It even still looks fairly tidy:

So, the $64'000 question is, do I fix it? I recon it will take me at least a full day to weld up the offside holes, drop the fuel tank and then do the other side. Possibly a bit longer. Then there's the front welding, and the rear arm bearing. The main reason I'm not sure it's worth it is because my time is somewhat more precious than it used to be, and I have a multitude of other projects to be getting on with.
Failing that, is anyone interested in a 1991 BX TZD +AC that needs some welding?