On my Hamtramck built 70 Cuda the "Wheels" section has the following codes.

"Road"- 61 "Color"- TX9 "Spare"- 16

Then "wheel cover' - 24


What type of wheels are these

here's a pic from Barrys site of available choices

http://www.hamtramck-historical.com/images/dealerships/DealershipDataBook/1970/70_Barracuda0032.jpg