I got a obd1 gsr right now and am in the process of swapping over to an itr long block. The itr long block has intake manifold and tb. Can i swap over my gsr distributor and vtec solenoid? Will my gsr engine harness fit? Will i have to change out the ecu, if I'm planning on getting hondata? And are there any other things i should know?

any input would be helpful, thanks.