There are 2 possibilities,, the only way to positively know,, is to check the threads in the center of the starter drive shaft... which generally requires the starter be in hand.
One is 10-24 threads, the other is 1/4"×20 threads there is/was a bolt available that adapted the 1/4" bolt to the 10-24 thread..
One is 10-24 threads, the other is 1/4"×20 threads there is/was a bolt available that adapted the 1/4" bolt to the 10-24 thread..
