Yes in Canada, the jamaican got a strong presence in Canada. Mostly Toronto.
Since Toronto got a huge jamaican population, the Shower Posse were and a stilll probably a factor in the drug buisness in the city. Many jamaican-Canadian gangs were getting there drugs from the Shower Posse and maybe other posses from Jamaica.

In the 80s and early 90s, jamaican crews were also heavy on the western part of Montreal City. Hoods like cote des neiges, ndg, lil burgundy, lasalle and lachine were full of jamaican gangsters. Crews like the bronx massive, grand massive, wakley crew, goodfellas and others. Those groups were probably link to some posses from jamaica.