My 96 Ranger originally had a 7.5" axle with 9" drums. I swapped an 8.8" axle with 10" drums, e brake cables worked just fine. Literally no difficulty whatsoever. Was not difficult at all to get the original e brake cables set up with the 10" rear end. I have done this with several year 8.8 10" drum rear ends going into several different year rangers with 9" drums, I've never had any trouble getting the e brake cables to mate up correctly.
If you go under your truck before disassembly and find the cable that goes from the e brake pedal in the cab and joins to the rear e brake cables, you will notice you can pull that cable down quite a bit- what I'm getting at is that there is slack in the e brake cable assembly which is picked up by a spring of some sort in the e brake pedal assembly. This gives you a lot of flexibility in changing brakes... the lengths of the e brake cables isn't that critical (3/4" difference between ones you're looking at shouldn't matter, but maybe get the one that is closer to the length of your original cable just to be safe). I don't 100% know that e brake cables weren't different lengths between say, a regular cab and an extended cab, or reg cab vs. long bed, etc. But if you're re using your cables and simply trying to replace them with new ones... you will be fine. Just be sure if there is an option when buying cables that you use your actual truck wheelbase, body type to order the new ones, in case they were different lengths for different cabs/beds etc. Again they may not even be different at all between cab/bed options, I just don't know