Go all the way, add diesel and crank start (or bullet start) or possibly gas/impulse mags with crank start and no electrical system, I mean no battery.

You want this thing to be EMP proof!

Go big or go home. 

 there is such a model too, the one built for siberia, with the crank, and it functions without any electricity too

https://www.ebay.com/motors/blog/lada-niva-a-soviet-era-legend-on-american-soil/

it's the AK47 of transport

even under such oppression the russians make this shit, i mean, just look at it

it's rough, and simple, but it works so damn well it's inspired 

 Every time I think I have a great idea I find out someone beat me to it… 

 At least that saves you from having to build everything. 😀 

 EMP then good luck getting gas for a Bronco
https://m.primal.net/LCJZ.jpg 

 That came to mind. 

 I could totally see myself driving that.  
😎 

 lada niva 💘 the siberia edition is even better, it has a crank and can run without any electrical stuff working anymore 

 Easy to work on, parts are readily available, fun to drive. 

 😻🤤 

 Nice 🔥