What you will find out is when you go to get the parts, no single vendor will have them all. I would also say stay away from the BIG name brand guys because they will for sure take all your $$ for the exact same thing you can get down the street for a lot less.
This should be plenty of info on where to get the parts and at least get you started.
Pump Gears** $36
http://www.tcsproducts.com/products/product/13/
24 Spring* $105
http://www.tcsproducts.com/products/product/15/
Billet Strut* $19
http://www.tcsproducts.com/products/product/618/
Rear Kevlar Band* $18
http://www.oregonperformancetransmi...OD&Category_Code=904&Product_Code=PTB-12820AK
Kevlar front Band $19
http://www.oregonperformancetransmi...D&Category_Code=904&Product_Code=PTB-12905F-K
Servo** $17
http://www.oregonperformancetransmi...ROD&Category_Code=904&Product_Code=SNX-22912A
Makco 904 page.* thin clutches/steels & Kits
http://www.makcotransmissionparts.com/A904.html
WIT trans, teflon seals, trans exploded view
https://www.wittrans.com/search.aspx?SearchTerm=12175ct
https://www.wittrans.com/Schematic.aspx?Transmission=A904
