For a Kentucky or Pennsylvanian, there are plenty in the country but they don't show up everyday for sale. If you have no luck here then your quickest bet is to go to Track of the Wolf. Shipping to Canada is not a problem for front stuffers. Track has a great selection and you can buy the finished rifle or either buy a kit or pick and choose your pieces yourself depending on how advanced you are.
Other than that, Lyman GP (Hawken style) kits really are nice kits/rifles. You can still find them (complete or in kit form) at Wholesale Sports and others.
Good luck
