Greetings

I recently had the cylinder head on my 81 B21F rebuilt. One of the shops I called had me describe the head and told me I had an MPG head. The distributor cap on my engine however, is red/brown, Bosch, not white. I read another post somewhere referring to the ignition computer mounted on passenger fender beneath coolant reservoir as indictaive of MPG.

How can I tell what this engine shhould be equipped with?

Also, on the cam belt cover there is a red sticker with black numerals 892. What do these numbers mean?

Thanks

Scott