In the beginning post, I did state this was going in a 1974, so I figured that would carry through the whole conversation about the year range in question.
That is what I have done in the past on other cars where I bought whatever was available as a replacement. I don't care about knowing where half tank is, just that with every sender readily available in the US, they are incorrect and empty means half. As a non linear system, roughly 28ohms would give a half tank reading, but everything other than this isn't set up that way. This sender from Plum Krazy Garage is the first that I've put in that is almost spot on without having to bend the arm.
