A morning at "Trig Towers" & only one skinned knuckle later...................
...
Rear trailing arm bent to buggery (removed) but other than that, all looks pretty sound on the mechanical side of things. Other things noted is rear shocks fubar

, bits of the large crossmember mount bushes were coming off in my hand (much to Trigs delight

) & rear disc didn't look too clever either (although the pads are sound) so, the shopping list is as follows.
Rear o/s trailing arm (or a pair). With hubs & bearings if in good nick, otherwise doesn't matter too much.
Rear bearing kit if replacement arm(s) don't come with.
Crossmember large bushes.
Shocks!
Rear discs wouldn't hurt.
Hammerite?

That'll get the car back to good, drivable condition.
Bodywork wise, I've seen much worse repaired. The dent will pull out quite nicely & a skim over with filler will get things back in shape. The arch is pretty rotton though so may be a case of cutting it out then welding/fibreglassing something in place. I'll leave that to the experts though.

Diva, you make awesome bacon rolls!

Progress continues here.
http://www.clubcalibra.com/index.php?topic=29928.0