<VV> Flywheel question

[Jim Houston]

I just bolted my flywheel (LM) following instructions in the Clark's kit 
and in "How to Keep Your Corvair Alive".  My question is this:  In his 
book, Richard says to leave out the inertia plate because "it isn't 
needed"...  do you agree??  My thought is if it wasn't needed, GM 
wouldn't have used it (save money)..  Should I leave it out, or use it??

Jim Houston
'65 Corsa