I don't know if RonSanto will choose to use these rules. However, below are the rules for the 90s Keeper League and very similar to the 70s Keeper League rules.
If he does use these rules, basically each manager will draft four players as keepers and then a unique stadium. At the end of the season, you protect/keep three players and then there is a 1-round supplemental draft.
It's a really nice format because it has the fun and continuity of a keeper league but without all the work and research.
If he does decide to use the same rules, here they are:
viewtopic.php?f+9&t=860&p=10868