Taking a break for lunch so I figured I would update this.
I was able to drill the crank. I found the center had a 1/4" step that allowed a drill bit to snugly center and square up. I started with that and drilled about 1 3/4" deep. Stepped up a few sizes and finished drilling to 2". Then a couple more steps up in size until I got to the final tap size needed. Got my 7/16-20 tap and it is going in nice. Have about another 1/2" to go and should be done.
Overall it's not hard and getting the first pilot hole is the hardest but after that, it goes easy. Thanks to everyone who kept saying I can do this. It will definitely make installing the balancer much easier.
