http://forums.hybridz.org/showthread.php?t=113508&page=13
Joe, page 13 has an example of a tank that was modified with a sump, BUT it still is relatively stock. I have not modified a stock tank to the same degree as what you are looking to do. MY guess would be that the tank be sectioned by a reputable place or the rear deck floor modified (I would do for former, not the latter, but it's a matter of choice). There are other threads dealing with the tank, but those are someplace here in the archives.
You give me far too much credit and there's too many rumors going around that I can't live up to! Your work so far, is much better than mine...keep it up!!
Davy