hey guys. how can you tell if its a b16a 1st gen or a b16a 2nd gen?

cuz this guy is apparently selling his b16a 2nd gen but its in a 93 integra and i wanna how can i tell if its a b16a 2nd gen. cause i know b16a 1st gen can also be found in a 93 integra. let me know please and thanks

 

2nd gen have grey plugs...the year is also stamped on the head...1992+ for 2nd gen

Newer design intake manifold

 

do you mind posting a picture here? of where the stamp is located? thanks

 

How to tell the year of the head:



Also the intake manifold on a first gen B16A will say PGMFI across the top, newer models will have 3 strips running across the top. Below is a pic of a second gen B16A manifold:

 

thank you(Y)