With the torque curve, I'd hazard to guess that the 4xe might be ahead of the 392 at 1/8 mile and not too far behind at 1/4 mile. Top speed is another story, but all that torque at zero rpm makes the 4xe a great rock crawler in my experience.
Yeah, my '83 up there (aka "Hungry Hound") has the 258 bored .060 over, headers, full dual exhaust, hi-torque cam, DUI ignition and the Weber 38-38 outlaw carb. Runs at least as good as the 304 V-8 if not better offroad.
Add on several thousand above $75k and get the XR package too. It's worth it just for the gears.
My wife wants a 392 but it appears they are still doing the launch package which is fully-loaded. I will NOT be purchasing a Jeep with black leather seats so Stella better stop with forcing the...
I've adapted my offroad driving in the 4xe such that I reserve the electric mode for the technical parts and run the ICE during easy stretches. Save that quiet torque for the rocks and ledges so you can fully enjoy the sounds of metal scraping on granite.