I'm doing a total brake overhaul on my 78 Pinto Pony including pads, shoes, hoses, MC, rear cyl's and hardware and resealed calipers. While replacing the rear hose, I found out that the driver side brake line connection is a size bigger than the pass. side. The old hose was made for this but my new one has the same size for right and left on the manifold. What's up with that? I guess I'll be replacing that driver side brake line.

The Autozone part number is 77012 or BH1254 or look for a hose that has a  junction block that has a 3/8-24 and 7/16-24 fitting. The reason is that some time during the year only one type of brake hose was stocked at the factory. The parts counter guy should of asked what year and month the rear was made, that info is on the rear end tag.Not on the tag on the body.This is the same problem that I had and this is the correct part number that is used from 1976 and up.

Yes if you look at the parts for both the 2.3 and the 2.8 you will notice that it asks when the rear end was made, this at least asked on the 76 and above cars. By the way you can get an adapter fitting and not worry about trying to cut and flare a new fitting.Look for a 7/16-24 to 3/8-24 step down Dorman etc brand.