I have a used transducer that is unique to 67-68 GM products. The unique thing about these for those who don't know is the cables mount perpendicular to each other.

While I don't know the history of this unit I do know it looks very good and it turns freely. Many of these units seized up and snapped the speedometer cable. 

As shown, the mounting bracket, and hardware to mount it on the inner fender are included.

The parts book tells me the transducer is correct for 1967-1968 Pontiac, 1967-1968 Chevrolet, Chevelle and Camaro.  The bracket is correct for numerous car applications 1967-1970 as well as 1968-1970 pickups.

$95 shipped anywhere in Canada. (After the postal strike ends I guess)