And there is only a couple of OEM quality gasket sets. One being Trans-Tec, the other Precision. Make sure you get a washer kit, bushing kit, and an item most forget; the output shaft bearing. It's old, and for the 904 there is only one, and has been the same for 1966 to 2003. The O.D. of it is 2.440". And yes, replace both the front and rear band. Shift kit wise, it's hard to beat the Transgo
