The rings get seized into the pistons. Usually they burn oil in the rear bank 1 (cylinders 1-3) Swapping for an another engine can be a gamble. All those engines had oil burning problems. These aren’t too bad to re-ring and the dealer probably has most of the parts in Stock. You’re still looking at ~$800 maybe in just parts. Plugs, gaskets, fluids, rings, timing belt, water pump, serp belt etc. not including the cat. I worked as a tech at a Honda dealer for 13 years. And I’ve done a quite few ring jobs on the side at my house w/o a lift since I left. My current ride is an ‘12 MDX that I just bought and rebuilt in sept. Was burning oil so bad it burned the exhaust valves. Depending what you can find for labor prices. I’d swap some new rings in it and drive it for another 75-100k. I’ve seen plenty with over 300k.