The guy at the speed shop said they did not need to be grade 8, I thought they might be so I asked him. But I will take your advice Don, it's easier than breaking them. So 3/8" x 1 1/2" grade 8- Thank you guys very much.

PS-The engine is still bolted to the pallet it came on and I don't own a hoist. I can't get to the bolts holes on the back of it. When I rent a hoist I'd like to have everything I need so I can get the eng/trans in the car as fast as possible. Haynes manual doesn't give bolts sizes as far as I can tell, but it does have torque amounts.

Thanks again,
Mike