I imported the engines myself. What a PITA. It took nearly a year to go from start to finish. Yes, some of it was my fault, I was learning. Dealing with the outrageous port charges, handling charges, pallet charges, loading charges, customs intensive exam charges, duty on spare parts and finding the duty "codes" and a whole host of other expenses make the deal less sweet. It only makes sense if one were to import an entire container.
Also, I had a few minor problems with the quality of parts. I am now waiting for those replacement parts to show up. Somehow (my fault) an intake manifold got broken. I wonder how long I will have to wait.
Some folks charge excessive prices on the engines they sell. Even those have issues, like sand, non rotating tappets, rust, dirty gritty oil and shipping damage. Paying too much does not insure quality.
My current opinion is that these engines are "kits". Some work needs to be done to bring them up to quality standards. How much more work a cheap Ebay engine needs is anyones guess. It may simply be a matter of a few helicoils, a cleanup and a few new parts.
Chris