The
stock flywheels are about 50-60 lbs (I think), aluminum ones are about 14-20 lbs.
You're pretty much limited by what are sold by Fidenza, McLoed, etc....
I would do for the heaviest of the lighter flywheels - around 20 lbs.
Here's a link.
http://www.summitracing.com/search/M...minum+flywheel