I would have to side with these two. You'd almost certainly have to get a different type of pump completely, one which may not pump enough. The internal pumps are designed to be in the tank, as stated, for cooling. I don't know if I'd try it. You may end up spending extra money, and doing the job twice.
Tony
Just siphon the gas out, then take the tank down with a floor jack. you have already wasted the time it takes to do it the right way...
I haven't really wasted time .. since I'm waiting on a new fuel pump :P
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