Getting ready to install brake lines on my 79 fj40 rolling chassis. Have 3/16 cunifer line and looking for suggestions on brake line flare nuts. Upon disassembly appears that fittings require double flare and the nuts I took off are 10x1.0 inverted flare / double with non threaded end. Having difficulty sourcing those specifically , found some on Bell Metric. Anyone have a better idea or experience with bell metric?