I'll save you the trouble, Craig doesn't do it anymore and it's impossible to find the honda wiper motor at the wreckers these days.
You can buy this whole plug and play kit from the USA
https://www.godzillaraceworks.com/electrical/wiper-motor-upgrade-240z-260z-280z-lifetime-warranty
with the USD so strong it's be around AUD$280 landed
I had a 1K deposit on the new Z but when the pricing came out. I asked for my deposit back (that took months just a long story of how dealers are quick to take your cash and hard to hand it back).
I have the opposite problem, everytime I bring my racecar to C.A.R for repair, I worried if lurch will open the pandora box
don't do a full restoration if you want to track or hill climb the car. (just my opinion)
ITB are greats but the cost is huge for what it gains over a professionally tuned carbs.
Get webbers and go to Steve Boyle in Perth to get it tuned. He's a guru with carbs.
Historic Sandown races on Blendlive TV, plenty of z actions.
including big spin by Jeff Thomas at the end of race 1
Race 1
https://youtu.be/ZF3CDbL_VUQ?t=9558
Race 2
https://youtu.be/2_phOq0QARY?t=10103
Race 3
https://youtu.be/2_phOq0QARY?t=24461