Yes you are all good.. You have it rite... :thumbsup: (on the bushing engines) the output shafts are all 1 inch at the journal, then neck down to whatever.. some like yours are 1 inch all the way out, most neck down to 3/4.. some are 5/8...
One the ball bearing pto engines.. the OLDER ball bearing engines.. like up till the early mid 80's engines are a 3/4 inch crankshaft ALL THE WAY TO THE cam gear.. The ID of the bearing is 3/4..
The later motors, the ones with square air filters, have a 1 inch I/D on the bearing.. As long as YOU DON'T HAVE, a pre 86 ball bearing crank, you could ad a large bearing and sidecover to an existing crank..
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A side cover you can change, the biggest problem would be the FRONT journal in the block.. There are aluminum standard, DU bronze bushing, and ball bearing blocks too.. If you had a ball bearing block, you would ALSO NEED the $90 dollar bearing... But as long as you HAVE the bearing, all the front journals should measure out the same....
Briggs are pretty easy to interchange cranks in.. They are pretty standardized...