Stainless Braided hoses have AN fittings that screw on to each other. That is the reason you would have to flare it at a special angle (for AN fittings) to make it work and not leak.
You can get a 90-degree fitting at your local parts store. They usually are brass and you might have to piece 3 things (angle fitting and 2 male 3/8” ends) to work if they don’t have one ready made.
Think of the 90-degree fitting as an “L” shaped fitting but generally equal on both sides.
Look at how your stock line enters your engine compartment from the driver side inner fender.
You can get a 90-degree fitting at your local parts store. They usually are brass and you might have to piece 3 things (angle fitting and 2 male 3/8” ends) to work if they don’t have one ready made.
Think of the 90-degree fitting as an “L” shaped fitting but generally equal on both sides.
Look at how your stock line enters your engine compartment from the driver side inner fender.