I have a balancer puller like that that I bought about 15 years ago. Works great on GM and Chrysler engines. Never tried it on Nissan though. Don't think it has anything to grab. I originally used a steering wheel puller with the bolts that I believe I got at a local Ace hardware store. Have plenty of options here, have Lowe's, Home Depot, a variety of smaller hardware stores, and a whole bunch of auto parts stores. For exotic sizes, have a Nut and Bolt supply store about 10 miles away.
These days I just use my pair of bolts and the small puller that I got from Cornwell.
Never thought about drilling and tapping my balancer to use a larger bolt. If I was to go that route being in the US, I probably would go with 1/4-20 for that. Common size and would not require as much drilling.