Hi Neville,
You should be able to consolidate ship household and personal car/ parts. You could also try:

Kiwi Shipping,
6400 Regio Ave Suite 5494,
Buena Park, CA 90620-1017
Phone +1 562 246 6621
enquiry@kiwishipping.co.nz
http://www.kiwishipping.co.nz/

Cheers