fuel sending unit for 1966 Plymouth Fury 3

Looking for a fuel sending unit for my 1966 Plymouth Fury III. A replacement came with the car when purchased, but it's too short and won't sit all the way in the tank. I looked up reviews about Spectra Premium and found or that it was a common problem. Any suggestions for finding a legit company that sells good quality parts ?

Try the NON PERFORMANCE parts section,,,, might have more replies???