To expand a bit on this, the 727 pushbutton has almost entirely different internals than the pushbutton 904 that he had dumped all that money into. Also, considering the amount of problems he had with that one, I wouldn’t even think about taking any of those parts and putting in a different trans. That’s just asking for additional issues. There are a few things that would transfer over but again, risk vs reward.
A rebuild kit for the 727 is about 150-200 bucks depending on the clutches you pick. I can walk you thru it Chris, it’s not hard at all. But I would for sure not try deleting the rear pump in this one. Like I said before, very rarely has anyone successfully done it for long. And there’s really no benefit to doing so. The rear pump does eat a bit of horse power but it’s marginal at best.