The Ultimate and the Ultramax use a THU004 handle
The Drake uses a THU068 handle
Lowes Hardware will sell a replacement fill valve, the Korky Quietfill, and the repair part for it.
Korky 528MP MaxPerformance
and they carry the Red and the Blue 3" flappers when you need a replacement. Also make by Korky.
Any standard side mount trip lever should work for it, I believe the Eljer might work there.
The book price on a chrome THU004#CP Toto lever is $23.00