Need to make a decision...

I would argue with that point. If it's mild off-road, maybe but even then more cubes is better. More control and lower rpms. Like aallison, I firm believer in the old cliche that there's no replacement for displacement. Assuming the rest of the drivetrain is up to the task, bigger is better in every way except maybe for fuel mileage. And even then, a mid size (read 350) engine will easily get the same economy as either 134. Bin there, done that, and have absolutely no desire to ever seriously wheel a Jeep-any Jeep, with either the L or F head 134 again. And I don't have any use for a restored garage queen as I don't do parades.