If you need any good used parts, Mike's 914 in Oshawa, Ontario. Mike is a good guy.
Shipping kills, as does brokerage, duties, GST, now even PST, etc. etc.
Try to make complete, big orders. Yeh, it will cost a lot in the short run, but lots of small orders cost major with all the above expenses involved. All cars over 25yrs old are called antique, so have them mark "Antique Auto Parts" on the bill, saves the import duty.
UPS sucks, they like to double dip on the shipping charges when the package crosses the border. Make sure the shipper numbers the packages (1of 5, 2of 5, etc.) or UPS will try to ding you brokerage on each ($45 each) package.
You can use the post if you not in a hurry, it's way cheaper, but always ask for full insurance. USPS has damaged one order on me before and I presently have a package that is lost in the system.
Hope this helps, Mark