I have 2 660's on top of a Tunnel Ram in a boat. Throttle Cable comes up from the rear drivers side and pushes, not pulls like an Automobile throttle cable.

Converted from a single 850 carb that had a kickdown. However the 660's do not have them.

Is it possible to swap to this linkage: http://www.holley.com/20-48-1.asp or another linkage?

I have seen where someone had swapped base plates with another carb on his twin 660's but do not know any details with that swap.

Any advice?