It depends on which version of Canadian Centurion you want to depict.
The most common versions would be...
The AFV Club Centurion kits will create several versions of Canadian Centurions with the parts in the box. You just have to know what you are looking for in the box and the changes on the real tanks.
Centurion Mk. 5 with Dozer...Leave off the dozer blade and you have a basic Centurion Mk.5.
Aussie Centurion Mk.5/1...This can be built into a Centurion Mk.5 with B type barrel or a Mk5.LR with the use of the 100 gallon external fuel tank or a Mk.11LR by changing the 20 Pounder Barrel for a 105 mm and using the proper parts in the kit.
Centurion Mk/5/2 / 6...This can be built into a Centurion Mk. 6 or a Centurion Mk.6LR or a Centurion Mk.11LR with the parts in the box.
IDF SHOT Centurion...This can be built into a basic Centurion Mk. 5 by leaving off the IDF modifications.
The other AFV Club Israeli Centurions all included the basic Centurion sprues as extra parts so it is easy to build different versions that would be suitable for a Canadian Centurion.
But, none of the kits include Canadian Centurion decals.