i really don't know who does in Newfoundland, but i know a guy who does.
Randy White (Manager) Exide Batteries
(604)525-9371 telephone
(604)525-7240 fax

He does Western Canada, but talk to his Eastern Canada counterpart all the time. he can direct you to the closest contact to you, or you can probably order the batts and get them delivered right to you. they have 6 and 8 volt golf car batts, check them out at
www.exide.com
Good luck, tell him that Patrick in Vancouver and hell probably give you a great deal.