[TR] tr3 starter motors

[Frank Fisher]

working on a Buddy's rebuild. he has a post 60000 TR3.
his starter motor is
the nice smooth round cylinder type.
he has a bolt on flywheel ring gear
we
think the starter may be bad
we have 2 other starter motors.
 replacement
option one is from a tr3 and is the multiple shaped type.
replacement option
two is from a mayflower and looks to be exactly the same as replacement option
one.
will either of these work? assuming they are in working order.
thanks
frank