Yanmar sd20

I'm going cruising the barrier reef at the end of March for approximately 6 months. These saildrives will be taken off the market then. Price reduction until then 2k for one or 3 and a half for 2.
Sold to me as reconditioned. Purchased in error. I didn't do my homework I have yanmar 3jh2 engines which require sd31 or above. I have done nothing with the saildrives but store them. Two available, $2500 each or $4500 for the pair