yeah your d series mount has only 2 holes right for the studs facing up? and your b series mount has the 2 holes for the studs facing up and a place for a bolt to go down behind those studs?

get a del sol bracket.

to be safe i'd say you own a pre 96 vtec sol.

you could probably use an integra mount too, but not sure if the b16 and b18's use different mounts. haven't looked at a b16 in ages.