I installed a Crary cyclone on my 99. It is the twin spreader and works well. It pivots easy to swing to the one side to adjust the sieves.The hyd. are plumbed to the back on the 99 so hookup is very easy. The kit comes with a flow control and has a built in relief valve. The relief valve gave me trouble when brand new, but it was replaced on warranty, 900hrs later no problems