Yes, order from Tamiya or from the AAF Tank Museum (I cannot recall the name of the contact there but she can get Tamiya parts at a great savings).

http://www.aaftankmuseum.com/RC-Tank-Parts.htm

Also Peddinghaus is well represented in its line of 1/16 decals. They look to be the genuine Tamiya article if not copies. http://www.peddinghaus-decals.de/