Unfortunately 6s281 does not have the original C4 automatic transmission. I do have a documented hipo C4 out of a later model (6s1669) 66 Hertz car that has all c6 casting part numbers. 281 was built at San Jose in the middle of October 65, an early 66 production, I have recently located 6S273 here in my hometown of Albuquerque, it has been hidden away since the early 70s. 273 is about 20 Ford vin numbers away from 281, it is also a factory automatic car. The 85 year oldgentleman who owns it has invited me to do a thorough inspection on it as soon as his wife is feeling better, hopefully soon. I have confirmed with him that the C4 transmission in 273 is the original unit. I will photograph and document it and report back on this thread as soon as I am positive it is a c5 or c6 parts numbered trans and servo cover. Should be interesting.
Thanks, Karl
6s281