its 1 1/2 inches long ,5/16 bolt , with a 1/2 inch round head. i use an allen bolt
to replace them .get a grade 5 or 8. you may have to use washers under the bolt to shim it up so it will lock into the rear end pad ,you will see what i mean. if so use a 2 inch bolt. the allen bolt head is not as tall as the origional bolt.
thank you i never thought about using a allen bolt but i think i will go that route but i also found that summit racing has them for only $5 so i will just order them from there.