I’m a local so I’ve made this trip more times than I can recall. While I’ve never actually used 4x4, the last couple of miles are no joke. Higher clearance is a must.
Take water. TAKE WATER!
If you can find them, there are trails that will take you east, beyond Alamo lake, into Aguila. From there you could take the Aguila road all the way to the Wikenburg/Vulture mine road.