Hi Pete,
If you go to scalemates and punch in PLA 99 or ZTZ-99, you will get 24 hits in 1/35. You could use the box art for help or you could check them and see if they show the instructions for more views of the tank. If not, then go to
www.1999.co.jp/eng/ and see if the instructions are there. I don't know of any walk arounds of it myself and would think there are probably none as it's a Chinese tank and they are kinda secret.
Oops, Gary sort of beat me to it.....
Allen