Last Batch of Legendary WI Beer

Wisconsin Brewing Brewmaster Kirby Nelson talks about how Pabst is officially ending production of a legendary Wisconsin beer, but that legendary "beer that made Milwaukee famous" is getting one last hurrah. Wisconsin Brewing Company in Verona is brewing an 80-barrel batch to close the book on Schlitz. Kirby has called this batch "Wisconsin Brewing Company's love letter to our state,” what does he mean by that? Schlitz was founded in 1849, but the final batch will feature the recipe used in 1948, what is the significance of that? The recipe calls for traditional six-row malted barley and 25% yellow corn grits, how hard is that to find? Is it challenging to scale down? Schlitz used to brew millions of barrels a year in massive facilities, how does he adjust for a small-scale 80-barrel brew?