This is a standard 3/4" wide Scavenge Body for the Titan Series 2 dry sump pump. It is designed to take the .750" Wide Scavenge Rotor Set (Part No. 177-50-Scav, sold separately).
The outlet port has 1/2 BSP female threads. The inlet port takes a special O-ring sealed inlet pipe assembly (sold separately) which is held in place with two screws. The inlet and outlet are arranged 90 degrees from each other. Typically the inlet faces down and the oulet faces sideways, away from the block.