Darrell,
Do not, I repeaat, do not walk into your local Pep Boys asking for one of these cranks. Not only can't they get one, they'll just look at you funny.
I used to enjoy going in Pep Boys for valve cover gaskets. They're trained to ask for year, make, and model, and then a myriad of other things that don't matter where valve cover gaskets are concerned. You should see the look on their face when I tell them it's a Pontiac V8, pick any year or model you want as long as it's before 1975.