I'm slowly knocking out maintenance and repair items on my 85 and one of those things needing attention is the soft lines from frame to axle/calipers. I've been looking at new ones but the issue I'm running into is that, according to the last owner, is that the axles are from a 78 K20 suburban and the rest is 85 Blazer. I'm finding different listings for different years and don't know the differences are and what set I need.