im using mine, i had it refinished and balanced with the rotating assembly when i did my engine, and you can see my mods on my member page, there are light duty alluminum ones i beleive that are out there right now, not sure where to find, try a search perhaps, but i am using the stock flywheel with a spec stage 3, 6 puc clutch and pressure plate
BTW on the autos its called a flex plate, not a flywheel, that might help you on your search