Thanks for taking the time to reply.
I've just tried lining the rad up with the various rear drive mounting holes and it looks like I'll end up with half a top fan grill left or a bit of the middle & top.
Another possiblity I've being toying with is to mount the rad at the top/right/rear of the case using the fan/rad bolts and drilling out two holes for the water in/outlet. This would give them a straighter connection to the rad. I could then put a further two holes one top/front/right(to pump) and one top/front/left(to block). This would give the tubing a gentle arc, but would prob cause a prob wih bleeding air out of the system.
With airbubbles it would look like a bloody jukebox

Could be interesting with a bit of backlighting
Any Thoughts?