Help with fuel guage PLEASE!

I called the local Dodge dealer and he referred me to another dealer who had old books and was able to confirm the PN I had PNs from original parts book from 67. and found other PNs for the latest replacement part from Chrysler. From there he searched the Chrysler national parts system and came up with what he said was the last one the system in Georgia. I called them and they had it on the shelf best 150.00 I have spent. If I was to do it again I would scour the wrecking yards for an OE 1967 unit and have it rebuilt by one of the sources above. someone posted an OE 1967 dart pickup tube (Fuel sending units) and the shape of the pickup tube and the sender on the tube is much different then the one I have. But it works!

Progression of sender part numbers 2421493 (OE 67) is superseded by 3621615 which is superseded by 4051004