OK I was swaping my tranny out and the lower tranny mount that contects to the body. Those 2 bolts well one just spin sounds like i snap the weld to the nut on the body. how would i be able to fix that.

 

you might have to drill and tap the bolt out and fit it with a bigger bolt

 

x2

 

is the nut still there??? if it is and u can get a little bit of the threads into the nut, get a impact gun and a 12mm wrench, put the 12mm wrench on the bolt not where the bolt is but on the shaft of the bolt and pull down real hard and use the impact gun to shot the bolt up as your pulling down...it might work if your lucky..because your putting friction on the nut and the bolt is spinning faster than the nut, so it should tighten up..hope it helps