Ok so this is not in a racing mower in fact its in my Marty J mower that I use to mow with. This mower came with a 48" deck and now has a 50" deck and it is a zero turn with duel hyrdo stats. little to say that this mower could use a little help in the power dept. I have done a little searching but so far has found nothing for the Kohler twins out there have found plenty for the K motors but nothing for the magnums. Any one have any ideas besides a bigger motor?