I usually ship my parts to a U.S. UPS store near the border and bring it across myself. I have only ever paid PST & GST on parts, regardless of where they were made, although technically, you should pay duty on parts made outside North America.

If you bring it across yourself, there are no customs or brokerage fees. With used parts, like the diffs I got, the border guys usually ask a few questions and wave me through, no charge. If you're stuck, PM me. Maybe I can help since I live a mile form the border.

1989 4Runner Special Edition
22RE, 5-spd.
TG 3" SAS, MC DuaLs, 4.56s, Air Locker
Hi-Clearance panels by