Dear Dave:
Christen Kit #801-4 is certified to the IO-320-E2A engine, but also requires Lycoming STC SE7CE, which consists of A.C.A. drawing 7-1312F, which I believe provides for an additional port in the sump.
Christen parts and kits are available (now a part of Aviat) PO Box 1240, Afton WY 83110, 307-886-3151. Unfortunately, they are not very sharp on the details. They have a manual on the 801 series under p/n 70047-001, last price was $11.93.
A.C.A. is at 800-223-9381.
Good luck,