Are you using an external pump setup? After talking to the vendor is seems that a double pumper or in-tank setup will not work with the sender. Could it be modified?I have the piece and am evaluating it. It is a NICE piece! Needs a few adjustments in the design. Nothing major...just some fine tuning to work with a G-body tank. I will check this weekend to verify clearances with floor of the trunk. Send me your e-mail and I wll send you photos.