On IPL the bushing are

PTO (cover plate) bushing is PN 293708

Flywheel (Magneto side) bushing is PN 293708

And the 293708 bushing kit is currently superseded to 796961.

The cover plate aluminum bearing would need to be finished reamed out to 0.8768" - 0.8770". Briggs service manual has it line reaming the bearing out for the bushing installation. (Repairman's Handbook 1919-1981). Please refer to this manual for specific repair procedures.

I 'm unable to the spec of the 19099 counter reamer for cutting the aluminum bearing for the bushing installation as the manual doesn't spec its diameter but you go by the Magneto side measurement once you get its bushing out. And if you would kindly let me know what that measurement is, I will add to my copy of the service manual.