Buy a new one from Mobis (Hyundai).
I clicked on your link but the price isn't $1699. I have seen them complete on Ali Express for about $2000.00New engine diesel 4D56 D4BF D4BA D4BH D4BB EURO-2-3 assy-sub set from Mobis manufacture. Displacement cc: 2476 (2.5 liters), Power 83Hp(58kVt), Price: 1699.00shop.korea-motors.com
Agree, Complete from Mobis is the only way to go, it will be about $3700 delivered +/-The complete crate motor for $2,999 direct from Hyundai is a staggeringly good deal:
"The engine is fully equipped, complete module with all attachments including intake and exhaust manifolds, injectors, injector pump, common fuel rail, starter, generator, air conditioning compressor, drive belts. Completely finished engine for installation and driving."
Good luck trying to beat that value.