That’s a fact about how easy the engines to replace. I’ve not done more than a suspension on a Honda CR-V before and I swapped out a piston slapping 180k 2.3 for a Mazda 2.5 with 75k miles on it in my garage by myself. It was super stressful but worked like a charm.The 2.3 engines are well known to self destruct, even with regular oil change maintenance. It is a weak design. No wonder Mazda dropped this garbage engine in favor of the newer 2.5 L design, which is much more reliable. The good news is that the 2.5 L can be easily retrofitted into any of the 2.3 L Mazdas for a very low cost, since these engines were ubiquitous on the Ford Fusion. They are almost literally a dime a dozen in salvage yards because the Fusion is such a disposable car there are lots of "totaled" Fusions out there with 30,000-40,000 miles on them. Nice engine donors available for $200-400.