Clutchmasters has replaced their line of aluminum flywheels in the 03-05 Neon SRT4 with Chromoly flywheels.
Chromoly is far stronger than aluminum, and isnt as noisy as aluminum in operation.
Lastly, Chromoly is certified by SFI in competition as well.
Chromoly is a more expensive material to use than Aluminum, but yet prices on the Neon SRT4 CM clutches have not gone up.
So, consider this a free upgrade!