It must still be spring, the sap is clearly up in the old country!
Ok calm down you lot, returning to the onboard air... Trying to find a home for the reservoir while waiting for USPS and Il Postino, I could have fitted it behind the n/s/r lamp as it's 200mm dia and would just squeak in there but that's where the oil cooler is going (all credit to 10cent for a superb design concept) so where to put it?
Here's a happy occurrence:
Practically made for the space

I might just see if I can get the Audi cradle bracket from the Allroad breakers and bolt that direct onto the exhaust sheild. I'm not worried about the engine bay heat as the reservoir is rated more than high enough for the job:
16 bar?!!! That's about 240 psi

I don't think I'll be running it that high, 120 psi will be more than enough to buffer the compressor.
Now to dismantle the old home-brew compressor for the pump, adjustable pressure switch, blow-off safety valve etc (it's currently hiding in the back of the garage) so there will be a nice single-phase Brooke Gryphon motor going spare soon, about 1hp iirc...
1985 Oettinger 3.2 Caravelle RHD syncro twin slider. SA Microbus bumpers, duplex winch system, ARC 7X15 period alloys