The "Fight Handbook" improved and codified the combat rules and supplied up-to-date stats for a lot of the weapons in the game. The "Automobile Manual" contained a brand new procedure for car administration to the tabletop which was meant to supersede the clunky policies specified in the base hardback handbook https://topantoto43108.activablog.com/25933038/the-definitive-guide-to-topan-toto