Inline Tube brake line sets

[zac]

Thinking of ordering a full set for my ‘79 K20. The listing in their catalog says “3/4 ton longbed”, and they have an axle set only that says “corporate 14 bolt”. But I think an advertised 3/4 ton had the FF or the SF axle that year, and maybe even a 12 bolt. Called their tech line and they had no idea. I have a full floater. Has anybody gone down this road? I don’t want to order and have it not fit. I ordered a set for a ‘72 K10 burb years ago and they fit perfectly. Thanks