Dont be "fooled" about the old wives tale about less intial force to get the car rolling (IMOHO)...
I installed the RAM aluminum with steel insert flywheel on my roadracer. It was a HUGE improvement. I still street drive it, and didnt notive ANY difference off the line (like stalling it). Maybe for you PURE drage race guys, it may make a difference. FOr me it was a HUGE improvement on the track as I could up/down shift and run thru the revs MUCH better.
MORE photos on my homepage (TKO link).