| It has a larger inertia ring which will aid more against engine vibrations than a smaller one will...although I'm sure both are fine. It was still a significant weight under stock as well (I weighed it 2-3 years ago, and it was something like 7lbs I believe...light enough). I would just go with the larger unit. You will never need or want to go any larger then. It over drives things slightly, but to compensate for that, just do as I did and get the NA UR water pump pulley which slightly underdrives the pump and will make up the difference to hopefully stop you from causing cavitation at high revs (although....I'm sure even with the stock water pump pulley it will be fine...I just like to be cautious).
Thanks,
Mike
1991 Black 3.0 Twin Turbo La-Z-Link
^^Hard engine break in method^^
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