I just bought an airboat with a 160 hp lycoming, I think its a 0320 ground power unit. Boat is a 16 foot jon boat. The motor runs great but only has one mag. the guy who sold it to me said this rig would have more power with 2 mags. How much does it usually cost to put this on, and is the guy full of BS. I'm planning on using this rig mostly on the ice in Wisconsin if the DNR doesnt ban us. Is this size motor going to get the job done? I have never even been for a ride in an airboat so any advice on this rig would be a big help. Thanks in advance.