Lightened Flywheel

["Brian Hollands" <bholland@hayes.ds.adp.com>]

In all my excitement about these new parts I forgot to ask if anyone has either 
lightened
the stock U20 flywheel or used an aluminum flywheel.  Ive heard that there are 
a couple
of aluminum flywheels available but they are expensive.  The Comp. Prep Manual 
only show a
diagram for lightening the 1600 flywheel.  If youve done this on a 2L, what 
did you do?
Brian