Damn...can I just BUY a better transmission for the money than having mine built?

Do you have a basic set of hand tools including Snap ring pliars, torque wrench, and feeler gauges? If so do it yourself. Lots of kits out there. Also another member has a great detailed step by step video for a 727 not sure how close that is for a 904 ive heard there very similar. The Shift kit also has very detailed instructions. Get a kit with bands. If you are not confortable with that I say go local. If there were any problems with that "off the shelf" it may be more trouble then its worth trying to get it shipped back.