Advice on owning a JZS175 Crown Royal Saloon

I’m interested in owning a JDM saloon and the Toyota crown piqued my interest. There is a ‘99 royal saloon for sale near me with about 40k miles that looks in good condition. I plan to use the car probably 2 times a week so not daily driver.

How are these to maintain in the USA? Where can I get parts or find a service manual?