They're actually M18x1.5, so it is pretty standard. Problem is, you have to angle the hoses up for clearance around the whole adapter. I had my hose guy cut my hard lines and weld on -10 fittings. I only realized afterwards that I would have to angle my new fittings almost straight up for them to work .... So, long story short, I'm looking for new hardlines so I can have him weld the fittings on the very ends, to keep the lines going straight forward from the adapter.
I want to keep it banjo, not for any particular reason. I just think that with a fresh zinc coating, and black -AN hoses attached at the ends it will look really nice, while loosely maintaining a stockish look. Purpose made hard lines beat loose and messy braided in my book, just trying to keep it clean as possible under the hood.