New guys 67 Formula S update:

The one on the left is the later model 440 thrust bearing, the one on the right is the early style one.
Ms1277P is the clevite 77 part number. My steel crank has been ground 010" so the part number is ms1277p10
For some reason these bigger bearings are hard to find down here or they want a stupid amount of dollars for them , so summit racing it is.