bellhousing bolts for 727

Go to your local hardware store and purchase 4 of 3/8's X 1.25" bolts and lock washers.
Plus the the 2 of 7/16's X 1.5 bolts and lock washers. They are all National Coarse bolts.

do the lock washers need to be attached to the bolts though? I know that they do have some bolts with the lockwasher attached. does it even matter?

does it matter what grade I go for also? These bolts don't need to handle too much torque right?