Where are the vin numbers and k20a2 or a3 Identifications

I have a 2004 rsx  bases moddle with I believe
the type s stuff swapped into the car has 6
speed clutch. And leather  where are the vin
numbers located on the block? so I can
identify if it’s a k20a2 or a3 and do the
transmissions have vins too I’d like to see that
too if they exist I’m getting car inspected soon

Also the cover on top of the engine is missing
so I can’t tell what kinda vtec it has that’s why
I need the block identifications

And the truck lid has missing badges

The k20a2 is performance vtec
K20a3 is eco vtec correct me if I’m wrong