GM SM 318 Cluster Gear Number ???

[Nils]

Hi,
I restore my SM 318 Tranny and I need a new Cluster Gear. On ebay i have found many different Cluster. The most are for Pass. Cars or only till 1965. My C10 is from 1966 and have the short tail without OD. On the Cluster Gear are no Numbers. I have make a Picture of it. Have anybody a List of Numbers for the SM 318 ??? How can i ident. the different Cluster Gears ? The dimensions or the teeth ?

Thank you all verry much.

Greetings from Germany.

Nils