Those calipers *appear* to have a banjo bolt connection, so standard flare fittings are not going to fit- you will need a short hose with the proper end fittings in order to make the connection from the hardlines to the caliper; and this will involve welding or clamping an anchor bracket to each of the axle tubes.
You really need to contact the manufacturer or vendor of the brake kit you used (what brand and model is it?) to see what hoses are recommended.
And as Cal said, you're going to have to bite the bullet and get a tubing bender and double-flare kit to bend up your own hard lines: and you'd best use standard steel or NiCop lines because as Dana mentioned stainless can be notoriously difficult to seal. Not only that, but it is harder to bend and can tend to crack when you put a double flare on it...
Nobody (except possibly the brake vendor) is going to offer pre-bent lines for this- think about it: it is a non-standard custom brake setup made to fit a variety of applications, very few are going to be the same. Even A body 8.75 rears can have different brake "T" fitting/axle vent hole locations, multiplying the variations. You wanted a custom brake setup, you need to do some custom work to get it functional.