I'm still thoroughly annoyed with my unplanned shock dilemma, what I'm going to do is unsure just yet. Done a few more bits.
Mounted my quickrack on my subframe, ready to be fitted to the car.
My new engine mounts arrived in the post

£9 for four. I could probably just drill them and fit them, but I'm probably going to get the pucks skimmed to the level of the E21 M20 mounts I used to create my subframe mounts. I need to drill them and get some M10 threaded rod (easily got on ebay) and they're good to go.
Oh, and I might be doing something with this 323i open diff...
I really need to get around to ordering my pedalbox since when the engine is next removed I can redo all the hydraulic lines I've crushed and bent, well I might as do the whole damn car since I'm getting rear discs and the petrol tanks are off the car.