It's not the sending unit that's the big issue, it's the goddamn tiny studys they use to hold it down. I managed to only break 2 of the 6, but unfortunately they were two beside each other so sending unit doesn't seal properly on that one side.

Otherwise though, a stock sending unit works fine. I modified mine to be completely -AN. It's quite easy to do and a fairly quick process. I can post up some pictures later, if you'd like.