I just found the manual online at Tamiyaclub, that is rather cool.

However in the reviews it says this tank only had basic movement control, there was no control of the turret and it had major issues climbing (unless driving in reverse).

Looks like it would be a project to convert it to a full-function RC.

I might just start with the Leopard 2A6 so I get nice and spoiled and then go for nostalgia... heh.