I don't think the gains are there for the wrangler in terms of cost / benefit. As Cobound eluded to...you'll be spending more up front, more for maintenance (looks like the cheapest oil filter I can find is around $17), and more for fuel, and I doubt you'll get that back in fuel efficiency gains (99% sure you won't ever get there unless fuel prices really skyrocket).
That, all on top of the fact that it is an EcoDiesel, which hasn't been the most reliable diesel engine to come to the market
