HELP ! what to use 904 - 727

O.K. see here we go Venomvpr900 your trans is a 998 with performance adders and I have figured out that a 998 has more clutch plates than a 904. Mine is a stock 904 with a shift kit no extras. Thats what scares me when I am told a 904 will work but I am not told about all the upgrades they had to do to it to make it work. Learning on a limited budget here