440 tunnel ram

That's a three bolt and what I would use because I only use mechanical cams but the hydraulic cam can use a single bolt. The thing that is nice is the key way on the crank but I have used the basic Cloyes timing sets for years. I can't and won't argue with you on that. I do run a button on mine also even though its said that you don't need to and my timing cover is always been deformed from it.