If you want "Wow factor," how about this:
Knowing that the AMC I6 is longer than even the LA-block V8, throw in an LA505 drivetrain from a later Dodge truck? Big Block-powered CJs are common enough that we can discuss them - but how many LA V10-powered Jeeps do you hear of?
Me being me, I'd build a MegaSquirt box to control the engine rather than transferring over the OEM electronics. Also, since the LA V10 is derived from the LA V8, transmissions should be simple (the LA505 came with an LA-patterned 47RE or 48RE anyhow, and the 47RE is essentially an A727/37RH with electronic controls and overdrive. The 48RE is slightly stronger than the 47RE.)
You may have difficulty wedging in the drivetrain - but, as I said, the LA V10 is shorter than the AMC I6, so you get some wiggle room. And, the engine itself is still relatively short (top-to-bottom) I think, so you can probably do it without breaking the hoodline.
You're in for a raft of fab work, but I'd think it would be worth it (but this is from a guy who wedged a twin turbo Buick GN V6 into a 1970 Bug - ripped out the back seat, move the firewall forward, figured out the fab & plumbing for the radiator, ... I built it as a strip car - after the speed test, Indiana State Police forbade registering it on the street, because they didn't have anything that could catch it.)
"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"