Fooled with it a little tonight:
I got an FK head because I hoped the service valves would be accessible but I decided to put 134a manifolds on it as well. Everything clears the oil lines but plain 90 deg manifolds would allow the lines to point either direction with plenty of room. The way it is now the 134a ports prevent them from being positioned the right way. (Hi to the front/lo to the rear.) There is still room to turn them around but it would put the hi port directly under the power steering pump and I don't think I could access that port with a gauge manifold.
It's tight in there but not as tight as the pic makes it look.
I mainly did it like this so it would be easier to try out both refrigerants if I want too.
Anyway... So far so good. I need to rig up an oil cooler line bracket on one of the compressor arms that will allow enough clearance to get to the tensioning bolts.
Front view:
