I was thinking the motor mount was weakened also but if you look at the pic I posted you can see the po took a cutting torch to it so he could get to the bolt.
I had 2 complete sets of mounts made but I still never replaced this one. I hammer this little sucker at plow days and the mount is still the same with no cracks.
I have the belt list that you need somewhere also. Let me see if I can find it.