Yes useless trivia, but as far as the harness goes he should be able to keep the stock one and just run a couple extra wires (one for vtec of course). The old accord ecu shouldn't be a problem seeing as how it would be replaced with a h22 ecu. Never seen any problems with guys on cb7tuner.com frying their ecu after doing a swap in a 90-91 accord but it could be possible. I'd just keep the stock harness and run the extra wires. Just my .02