Ok,
Stupid question – I have a rear locker on my 94 Sammi, I hate it – its coming off. I have decided to send my rear 3rd member to Brent and have the ARB air locker installed.

I figure I will go with the bigger RDCKA air compressor and maybe a holding tank later on.

Here is the stupid question- when I get a front locker later , will I need to manually lock the hubs or will the ARB over ride the hub.

Maybe its not such a stupid question.

You will still have to unlock and lock the hub manually. On the trails, you can leave them locked though, and just lock and unlock the diff. SO, you really only need to unlock them for on-road driving.