It is an 84 GMC S-15 Jimmy 4x4 with a 91 4.3L swapped in and carbed.
I don't have the build sheet in hand but I could tell and see a few things.
390 Holley Carb - I need to do a good cleaning and rebuild to make me happy.
Edelbrock 4bbl intake - not sure what one yet
Flat top pistons - I...