I think you should be able to do a little better than $1000+USD to your door
The guy that I used isn't on email, but he uses
www.pwr.com.au cores. Paul Weel (the V8 Supercar driver that crashes into everyone else
) owns the company, and his radiator cores are highly regarded within the racing industry. I'm not 100% sold on his intercooler cores, but his radiators are top notch. PWR will custom make a radiator for you, and their factory pricing is supposed to be pretty competitive. I'm sure they'd have access to better shipping rates, or better yet, they might have a Kiwi dealer that could order it in for you.
Haha... this is an old thread - on a post above your question, I mentioned that the car was 6-8 weeks away. Well, it ended up being finished 56 weeks after making that prediction. There's nothing like an optimist!!!