Go to the wreckers and get the fittings off the end of the OEM lines. Then you can use them on new custom lines that fit your application. They are just a flare fitting, yeah?
you could just get friendly with your local parts guy. Most part stores have an ***load of disorganized fittings and adapters somewhere. Best bet is to draw a picture and bring in an example of what you need to adapt to what. Then you ask where they keep all there fittings and blow off any attempts by the counter guy to help out. After about 20 minutes off opening drawers you should have what you need. It is amazing the amount of adapter fittings they make. The advantage of looking through everything is that next time you have any sort of fitting disaster you will know exactly where to go.
My experience with this type of problem is to take the hoses for the Toyota box and the hoses for the pump you are going to use and go to the parts house that sells/makes hoses. For the pump itself, isn't there typically just the one high pressure line? If thats the case, the return or low pressure line should work from the Toyota box to your pump with no problems I'd think. For the pressure line they make what is essentially a compression fitting that'll work to mate the two lines together. Or, with a good hose maker, you could just take the fittings off of the lines from the Toyota box and have your hoses completely made custom to your specs. Your best bet for custom bent hoses would be to use something like 3/16" brake line to make the bends and profile of your hoses. I don't like welding rod or an old coat hanger as they tend to allow too much play in the design, but to each his own. Good luck!
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