Ray,
Did not have Overdrive and still doesn't. I still have it and haven't driven it in some time! The previous owner had installed a 1952 engine which should have still been 217,don't know if he had swapped rear end or what?
I have been wanting to get it out and install the set of original Fentons that I picked up for it! These little engines or sweeter sounding than other six inlines, possibly due to the six seperate exhaust ports?