hi, I can see most you don't drive a stick car!! the aluminuum flywheel is better over a heavier wheel. i have ran one in a 265 55 chev on the street. now,true, it didn't have the power to break the tires loose like heavier wheels could. I could out run them and out accelerate them. when racing them, i could launch at 5500 rpm, andthey were held to bout 3000 max to keep from blowing tires off, I was long gone and beat them!! I use one in all my drag cars, the aluminuum wheel is two tenths and two miles an hour faster. simple physics, the lighter the rotating mass , the faster the acceleration is. mcleod makes an 18 # steel wheel for mopars. gives you best of both. just foodforthought!!