Hey guys, long time no see. I have an update. I bought a rebuilt 401 with a thumper cam for my 1955 Special. (It was a sweet deal that I could not pass up.) It came with the original transmission. Apparently they both came out of a 62 Electra originally. Anyway, I'm trying to research everything I will need to do to swap the old 264 block out and keep the torque tube drive shaft. I have a 56 dynaflow but I was wondering if the 62 transmission can even be used with my setup. I'm really early on in my research for this so any direction and forum links would be much appreciated. I'm trying to search it out on the forum but I'm not sure where to start. Any ideas?