Electronic will be button/switch operated. I don't expect to sell much if any of the rear kits. Mostly doing it for myself. I don't think the push button PB is what will scare people away. I can tell you right now it will be more than double the cost of the F+R Lite package. The cost is attributed to the 2 extra spot calipers, the parking brake module/controller and brackets. I've found most 80 owners won't be willing to spend this kind of money and if they are willing to double down on costs, then a switch operated PB is the least of their worries, and they know what they're getting into.
Think it'll work with the cable actuated calipers? Mounting looks the same as the electronic version.
I actually have a pair currently, been trying to figure out how to mount them over the rear rotors combined with E-Stopp actuator. I tried mocking up the electronic calipers but didn't have room as I have a custom coilover setup behind the axle.
I was thinking of something like this. Electronic parking brake but using cable calipers: