Greg,
Look no further than your local tractor shop. Seriously! Any place near you that does hydraulic hoses for tractors, combines, big trucks etc will be able to help you out!
The fittings on the Goose hoses are NOT metric! Gotta remember the brake parts are Girling....from England..... so threads are all SAE or English or whatever you want to call them. (If metric were needed, modern shops likely have them as well....due to cars etc switching to metric.....)
If you have a shop that does nothing but hydraulic hoses.....go talk to them.
Should run you about $35-40 a hose, and they can make them and pressure test them in about a half hour or so once they get rolling. Can even choose color of the hose!!!
Go git 'em!
Steve