Currently doing a rebuild and found a few mentions of the short block part number Winger sells in these threads
hopefully the information below clarifies any uncertainty for future buyers
10103AB470 - EJ207 semi closed short block only (oil pump kit not included)
10103AB470K - same block as above, but with the 10 mm oil pump kit (includes 10 mm oil pump, oil cooler and filter)
10103AB470K12 - same block as above, but with the 12 mm oil pump kit (includes 12 mm oil pump, oil cooler and filter)