TXChevy50,
It looks like you have dual 1-barrel (original style) Rochesters.
Dave's linkage looks like the set that Tom Langdon sells for Carter-Weber (and maybe Holley-Weber). Here is a single carb linkage but he also sells a dual carb linkage:
C-W & H-W linkage However, Tom Langdon also sells the Rochester set also (a set sold by several vendors):
Rochester linkage 
