Bascially you traded underdriving the P/S & Alt by ~17% for adding 3+ lbs to the crank pulley (probably a draw) and altering the stock damper's (not a DMD!) orientation & position so it will not function as it was designed to.

The UD P/S pulley is a nice upgrade though.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.