B16A2 is an OBD1 out of a Del sol or JDM SIR or whatever. IT would use a P30 (i think( ecu and you'd need an OBD2 to OBD1 pigtail connector. Check out skunk2 or lowcash racing.
If you mean an OBD2 B16A3 (OBD2 Del sol vtec or 99-00SI) then you'd want a 97 Del Sol ecu, SI ecu, or a OBD2 EX or GSR ecu that's been chipped for your motor.