904 rebuild

I toasted my transmission behind my slant six. I will probably end up buying a rebuilt one for 500.00. I dont have much choice right now as I need the car to get to work. My question is this, does anyone have any experience with this manual http://cgi.ebay.com/ebaymotors/A-72...022QQitemZ350027301144QQrdZ1QQsspagenameZWDVW ? I have another transmission that I dont know the condition of, but would like to do my own work eventually. Be kind of nice to have a spare transmission. Is there a better manual for rebuilding a 904? Thanks.