these also came with b16's
PR3-J00 1992 Integra JDM B16A EF
PR3-J51 1992 Integra JDM B16A EF

but not sure about 1990. i think maybe a crx sir or something came with a b16 head the year 1990... cuz i had one of the b16 heads from 1990 it was a pr3-4. but regardles.. sounds like a good old swap.