Another "help me identify my engine" thread

[speedy_steve]

I've stalled on being able to identify this engine; beginning to wonder if it's a replacement...and reluctant to start ordering gaskets and such until I get the year and size.

At any rate, can you guys help me id this engine or point me in the right direction?

Thanks a ton in advance!

It appears to have "CON2" at the rear; then "1 58" in the middle; then "14002009" in the forward location.