Finally finished the HID install on Saturday. Damn it's nice to have bright headlights, especially coming from stock/non-relay'd ones. I never got what the fuss about HIDs was, until I got the S2k which has amazing headlights! I'm glad I put these on the Z, it should make night driving a whole lot safer especially for the upcoming JCCS trip.
After mulling it over, I decided not to be a maniac and not try to swap the trans, diff and clutch in 1 day, 3 days before the road trip. I can smell Murphy's Law wafting in. If the exhaust wasn't such a PITA to remove, I might have considered it. Instead, I'll do some maintenance (brakes, HVAC, weatherstripping, carb jetting, thermostat, etc.) and try to make the trip as comfortable and successful as possible. The swaps will have to wait until some point after JCCS and likely after the month of September.