automatic and Manual thermoquad difference.

A few years back I bought a hard to find AVS 4933S for my 70 340 4 speed Duster with CA Emissions at Carlisle and dropped it off at a place called Dated Components (Hamburg, PA) who had a spot in the swap meet. It was not cheap but they made it look like it was brand new. Re-plated everything and I got it back roughly 6 weeks later. Kind of a waste for my car. I was thinking about selling it to someone looking for a factory correct carb for a concourse restoration.