Yes Patty's right - there are kits abounding for those guns. CGNutz classifieds have lots there right now.
Failing that, do a web search for cdn shops - I think mags are a no-no for shipping from USA.
north shore barrels
Alberta Tac rifle supply
Wolverine supplies (Manitoba!)
Jo brooks firearms (Manitoba!)
converted two 700 bdl left handed rifles to detachable magazines.One was a bdl left hand 30-06 and the other is a 700 bdl in 338 win mag.I bought kwik Klip conversion kits (came with magazines as well)on CGN site but haven't seen any for sale in a while.The only thing that you had to do was to remove some material from the stock where the release for mag is.I am extremely happy with mine.Justgoogle Kwik Klip conversion and see what turns up.