if its a 96 gsr head then you dont need to switch anything because its obd2.you can use your stock ls harness and add the vtec wires. i though you had a 95 gsr head.
you should switch the senors that needs to be swaped to covert it to a 99.and find a 99 gsr ecu that you can use. if you dont use a 99 ecu the computer will know.
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