Good news! They ARE completely legal in Canada. Import regulations allow the registration and licensing of MiniTrucks as long as they meet the following requirements:
Transport Canada allows vehicles into Canada as long as they are 15 years (to the month) or older.
Unless you're an importer, you don't have to worry about these. They are already paid at the time of importation.
Your province required each vehicle has undergone and passed safety and emissions testing.