Two are known to be preserved in Brazil.
Parque Regional de Manutenção/1, Vila Militar, Rio de Janeiro
"The Brazilian army will only employ armored wheeled vehicles from the Second World War (1939 -45), while in 1941 begins to receive military equipment coming from the United States, reaching the first M-3 Scout Car, 4x4, 6x6 the first T-17 Deerhound, and this vehicle was only used by the United States and Brazil, and when the country sent an expeditionary force to fight in the Italian Theater of Operations, a Reconnaissance Squadron was equipped with 13 armored 6x6 M-8 Greyhound, who would return to Brazil and after that conflict would be a shield which greatly influenced the Brazilian Army, not only in its use but also served as a platform for future projects of national industry"
http://www.defesanet.com.br/rodas/