I need to replace a leaking rusted 5/16" diameter transmission line on a Dodge van with an A-500 transmission. Currently the steel lines run from TX input/output, to right around the engine pulleys, then flex hoses goto the barbed fittings on the radiator. Not sure if steel lines originally completed the whole fluid circuit and this was changed at some point before my ownership. I saw Napa has preflared prefitted 5/16" brake line, but the fittings are for brakes, not for the coupler( 11/16 nut size) on the transmission. Can I cut the new brake line, remove preinstalled fittings, and slide this existing threaded coupling shown in pic below over the tubing? then bend the tube as the old rusted one? I know there are several other options but I would prefer to Keep it clean with minimal added couplings. I have no issues using a tubing bender, or flaring the end which the flex hose is to be clamped to if necessary. I plan on doing a pan drop/ filter change and new ATF+4, along with remote filter mount to delete the weeping magnefine all at the same time. Temporarily, a length of split hose covering the weeping area on compromised steel line, held tight by multiple hose clamps is not leaking, but I need to get this fixed proper. I also see that there are prebent steel tubing available, but not for my specific make and model Some will say they fit a A 727 or an A 904, but What about an A-500?