I've built a few mud mowers awhile back. Did a pully swap and it was much faster. The steering on riding mowers is very sloppy. I almost flipped it a few times. I welded on some go kart shackles and converted it to basically a go kart steering system. I already had the shackles, but ordered appropriate length tie rods. Shouldnt cost much I would think to order all the parts you need. Check out a go kart supply website. Fairly easy upgrade if you can weld decent. I didnt ride it much in the city, but we beat the sh!t out of it mudding in the woods and trails. Ended up blowing up the engine and lost interest in it.