Could you post a few pics of your clearance problems? We might be able to suggest a few different ways around the problem. What part of the compressor is hitting the clutch parts? Is it the outlet or the housing?
I was suggesting the e56 clutch slave as it may be a different size or shape to the aw11 which could be what you need. Perhaps re doing the hardline is an option? I'm just thinking of mixing and matching fwd parts to get the required clearances with bolt on bits only.