this won't help with your problem, but several years ago [well, maybe 10+ - it was from the 2001 catalog LOL !] my buddy ordered a rear brake line kit for an 8 3/4 in a 70 superbee from year one, and the number listed they sent was for a dana 60. he called back, and they said that part number fit dana 60 AND 8 3/4[one year only- #QRB74 TS - steel]. they said his rear must have been modified some how [?]. i had him order a line kit for a 66-69 8 3/4 [#QRB45TS - steel] and it fit perfectly ! that number was still listed for several years after, and since i don't have a current year one catalog, i don't know if they EVER corrected it. and trying to correct the wrong info in the catalogs with the phone jockeys is fruitless. hope you get your deal sorted out ok.