i know that the obd0 throttle body from the ls integra will fit the jdm d15b manifold but i was wondering since the motor is obd1 and the throttle body is obd0 if there is anything else that needed to be done.... or just bolt it on and hook up the hoses and what not

 

everything will be fine, even if you swapped to an OBD1 harness, the only difference in TB's between OBD1 and pre-obd are the pre-obd ones have to use the Map on the firewall and how they mount up. OBD1 TB's have the Map on top of TB but the plug for both is the same.