I speak from the POV of someone who has a rarer and much more valuable car with a k20 shoehorned into it. I would pay hard hard currency to have the original engine and ancills sat in dry storage.
In my opinion the k series is charmless (if powerful) compared to a b series. The b18c being the...
Oil overfilled by 2mm?
High quality synthetic 40w or 50w MAX?
Oil temp guage confirming temp below 120degrees max?
Stock rev limit?
I think vtec lumps are bulletproof ONLY if all above are "yes"
A built engine will not help at all with bearings.