I have the Centerforce #900260 aluminum flywheel on my 428FE. Why, you ask, do I have the zero balanced 427 version on my 428? Because with the SCAT stroker crank you internally balance the assembly. The flywheel weighs just over 17lbs and works just fine for me -- I wouldn't change it. I have no idea why Centerforce wants $750 for it -- maybe it's the beautiful gold inlay
. The competitors are charging half that for theirs.