Help identify Engine

In '78, there were 4 stages of the 360 engine. That info sticker on the valve cover for timing etc. had 4 categories
Stage 1. 2 barrel no lead
Stage 2. 4 barrel no lead
Stage 3. 2 barrel leaded
Stage 4. 4 barrel leaded
I was incorrect on my engine, it was a Stage 3 2 barrel leaded.