As part of my 4.6L modular conversion ('99 Cobra Mustang version) I put a stock Cobra fuel pump (and the filter) in the tank. To do that, I cut a hole in the top of the tank (http://home.earthlink.net/~rlbpantera/catpix2/GasTank.jpg) so I could slide the pump onto a piece of alu angle iron welded to the bottom of the tank. More details and pictures if you are interested.
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