I have a 2006 Exmark TTHP with 48" deck and 17 hp Kaw. My understanding is that the only difference betwee the 17hp motors and the 19hp motors that are used on these units is the carb. So, my question is, can I replace my current carb with the carb used on the 19hp Kaw and essentially turn it into a 19hp motor? Any insights would be greatly appreciated. Thanks.