Thanks for the interesting idea Chris. I'll look into doing something like that as one of my options.
Also, thanks to Buly for the offer of a banjo fitting. From Paul's message, it sounds like the banjo doesn't fit any better, so I'll pass.
The more I think about it, the more I think it might be easier to make the oil return to the oil filter adapter block. pretty sure that's how it's done on the FD. Of course then I'd have to find a plug for that oil return hole in the rear housing.
Thanks,
Rusty (let the scheming begin)