I have one and some pumps if yu want to pick uo the pair, we removed the sender thinking that was aproblem but it wasnt. $250 for the used kit pumps and sender together?
Justin told me to use the gt500 level sender and he also said the early level senders were the same.
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If my memory serves me correctly....this is what you are looking for.... I found it on my phone and thought it might help you. It was my reference material.....
Good luck