Hello Elton
A warm welcome to these forums.
I'm sure Mod BB and members will contribute shortly.
No, the engine is a replacement from the 1980s.
To answer one question now.
The pulley will be screwed on. See:-
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=58163[I suggest you do not re-fit the pulley. Return to standard spec.]
Hope this helps.-----------------------
Jack
