I'm curious if it's worth swapping the factory crank pulley on my '03 eclipse GT for an "unorthodox" aluminum pulley. I know the typical results from this type of swap, but when looking at mine, it apears to be a clutched pulley. Is this typical? My area of expertise is on bikes. It seems like going from a clutched pulley to a non clutched pulley will equal out any advantage the lighter one gains. If the gains aren't much I'll probably just go with the accessory pulley's and underdrive a little with them. That crank looks like a b!tc# to swap.