Brian- why a 'thing of the past'?
that funnel looks interesting. What's the purpose of the bolt on the lid---just to add weight/ I assume you need a friction fit between the lid and the funnel?
Many recommend at least 700 in-lb for a 6" so more, of course, for an 8". Milwaukee have 1200 in-lb drills---fairly expensive though. There are often pkg deals with drill plus batts posted online. Google is your friend!