63 slant 6 904 transmission seal and o ring question

Individual seals for your early 904 may be difficult to locate. I'm looking in my transmission parts catalog, and there are a fair number of seals/O-rings that are not listed separately. You need to buy a gasket and seal kit specific to the early 904. While I've purchased parts from Rock Auto, having worked in the transmission parts industry, I've noticed on their web-site, transmission parts (particularly early models) there are lots of errors in the listings.