I am absolutely not the expert on this, and I'm pretty sure there are at least a few gamer-posters here who are. That said, I would start by experimenting with "Totals from year:" on the League Settings > Stats & AI panel. If you wanted your 1935 season to play out - statistically - like 1965, you'd select 1965 here.
In this example, you might also want to change - on the left-hand side of the same panel - Historical Hear (under League Strategy, AI and Stats Modifiers), and Select Which Settings to Import (under Import Settings) to 1965.
Again, I'm not the expert, but this is where I'd start for some testing and experimentation... Most surely, if I'm not correct here, someone with more knowledge in this area will point it out
