...heavy vs light weight wheel is a lot like small vs big block, can be a can of worms.
I'm running pretty high gears, 65 mph in FIRST. That kind of setup lends itself to a heavier wheel.
I called Don this morning, had a knee slapping good old boy talk about whats going on around town and how things have changed over the years. Great fun, oh, and I finally got around to ordering those MSD bushings too. I look forward to meeting Don and checking out the garage in the near future. I might just drive my car up there and let HIM "dial in" the MSD curve and carbs! He had some good ideas on the subject, nice guy.
In a nut shell, Don likes the vacuum advance. He thinks my curve should be adjusted by adding or removing weight on the mech advance, not just changing the springs. He thought I might not need so much BASE advance IF my carbs were modified. In my case I might need to bring in full advance earlier than my current 3000 rpm, maybe 2400 rpm. Good stuff...