Just curious, I'm converting a lot on this car that I'm working on. Originality is not important to me. Just curious if this is technically an automatic engine to begin with because it's definitely a 50's engine that was put into my 1940 Buick Special. I was wondering if the empty hole on this linkage is a sign that it was actually an automatic transmission and then somebody made some kind of adapter to make it standard transmission to make the original 1940 transmission to work. Obviously won't know for sure unless I drop the tranny at some point. Not looking to spend all the money to convert it to a 700r4 and having the whole issue with redesigning the torque tube and whatnot. Just curious if it's worth it for me to buy a used Dynaflow and having it lay around just in case. I use classic cars and TV and movies and this is another one I've added to my collection, but I wanted to give it a lot of amenities, particularly if a stunt person would have to drive it and believe it or not stunt people, RARELY know how to drive stick shift let alone three on the tree so to save a transmission and the car in general, I was thinking of converting it to the automatic. I'm already putting a much bigger radiator with electric fans, converting to electric steering as we speak, making everything 12 volt, electronic ignition, disc brakes and a dual master, and air conditioning! So I just thought I might go for broke and just convert it to automatic but obviously I don't know if this engine was always a standard engine and if it could be converted to automatic, to a dynaflow, regardless based on the year. The numbers on the engine are almost impossible to see, it looks like somebody made their own numbers over this number and I don't have those numbers on me but I can tell by the extra set of mode amounts in the middle of the engine, that it's for 50's car. In other words I don't know if they made the back of the crankshaft to fit either transmission or not, or if this picture I'm providing leads a hint to that it was an automatic because I don't see where this hole gets hooked up and it does get incorporated with the throttle of the engine. Any help would be greatly appreciated. Please don't tell me the stick shift is better than the automatic, because that's not the issue here. I'll rebuild it and I'm sure it'll be fine, I'm doing this to avoid other issues that I talked about earlier in this posting.