Edelbrock 8026 Bracket
It fits and isn't cheap. Hooray.
It's a stamped steel part with a grooved stud pressed into it. Expensive for what it is, but so are most Edelbrock accessory parts.
ProForm 66515 Harmonic Balancer Installation Tool
Worked fine for me. I don't understand how some reviewers had problems. Perhaps they were installing damaged balancers?