Ventport, sorry for the delay in responding to your post, but it has taken me awhile to find my pump. The one that came on my '56 is the one on the right of your second picture.
I was able to find....eventually....a rebuild kit from Prestige Thunderbird. (Frank is the guy to call.) None of the other kits I was able to find held up to the ethanol
gas.
After too many frustrating experiences, I've gone to a pump block off plate and an Autobest electric pump back by the tank with a pressure regulator up at the filter inlet.
I wired the pump with a toggle switch under the dash. I turn it on prior to start up and she starts immediately without lots of load on the battery.
Mine is not a show car. I'm more interested in drivability and reliability!!! The electric pump gets it done for me. Also, I don't care about the wipers, as I don't take her out in the rain.
Regards,
Dick.