> It seems to be an all in one bracket but cant be sure (pas and aircon).
No the air con bracket is seperate from the block, its NOT part of the block (EPC shows this). You should be able to remove it and bolt on the bracket I've shown above. Or course you'll need a different length alternator belt too.
> I know its not part of the block but wasnt sure if the bracket was for the pas AND aircon.
looking at EPC, the PAs bracket and air con pump bracket are seprate items.
> Will a bracket from any xe do or just a calibra one?
Going by the pics you have a > 1993 c20let engine.
You've proably already got the correct (same as mine) PAS bracket, just you can't see it will the rest of the engine bay parts in the way. So all you need now is the engine bracket (see my pics above) which will replace the air con bracket you have now. To be on the safe side, get the parts from any non-air con c20xe/let Cav/Calibra from 1993 onwards (K reg).
With the engine bracket (90 372 450) you need a metal plate (90 372 466) that goes on the end and the rubber mount (90 278 347).