Kinda depends on whether the battery tray has been replaced and what kind of hold down it now has, 67-71 would likely be the easiest to adapt, if thier application book is on it's game a 72+ will have the posts reversed.
Whatever you do don't buy the battery from Canadian tire, or any other dealer selling rebranded Globelite's (sloped area between the side and top terminals and a recessed handle), they're a waste of money and sure to expire the same time as the warranty.