That's nice. You used word 'restore'. So I assume the Hurricane is not running condition.
As usual not running MC, it may need OH for carburetors and calipers. Hurricane unique weak point is plastic shells. It may have broken parts.
Other problem is, availability of parts. Because relatively small production number. Probably less than 6K.
Honda parts # has XXXXX-YYY-ZZZZ format.
YYY is model proprietary no. If YYY is MM4, it is CBR750 unique parts. Most difficult to find such parts.
If your customer has deep pocket, you can find complete CBR750 in Japanese used MC market at less then $1500. it does not include S&H.
However, Japan and NZ are relatively short distance. Probably shipping may be less than $2000.