Folks, I don't know if you all understand this or not but virtually any brake hose part you can immagine can be had in the aftermarket so you can build any sort of custom system you want. Braided hoses are available in lengths in 1" increments with female connectors on each end. Then you can buy any kind of fitting you want to put on the end - there are thousands of them available from companies like Goodrich and Russell., you can see one of them in the photo above where an after market (stainless) banjo was put on an off the shelf (braided stainless) hose. End fittings, things like banjos or splitters or pressure switches are reasonably priced, usually $5~15 each with only two or three required per bike. Hoses are inexpensive too, normally costing something like $1 per running inch, so a typical twenty inch hose might cost you fifteen or twenty bucks.
Hints: The size you want is AN-3. You can interchange one companies hoses with another companies' fittings. When you buy braided lines make sure you get a set that is plastic coated. If you don't that hose will take the paint or powder coat right off of any frame part it touches - it is incredibly abrasive and just normal riding vibrations are enough to cause it to destroy anything it touches. Also, when you order your hoses buy them all from the same place and buy them all at once. There are subtle variations in the color of stainless lines and if you mix them up it usually looks like pure hell. Don't over-tighten fittings!