the 86-89 integras had a D-series 1.6L engine

all of them coded D16A1, with a DOHC, 16V 1.6L sequential MPFI engine.

they are similar to the ZC engines of japan
the 86-87 integra had 99ft-lbs@5500rpm and 113HP@6250rpm (akin to brown-top ZC)
and the 88-89 integra had 103ft-lbs@5500rpm and 118HP@6500rpm (akin to black-top ZC)

the engine is a direct bolt-in for my 87 CRX (not without work as it will involve a carb->EFI conversion)