For all you John Deere experts. I know a couple people here locally that has these mowers for sale. The 325 is 1 1996 and all I know is it has the 18 HP Kawasaki on it and a bagger. Another guy has a 345 and it has the 20 HP Kawi and it is liquid cooled. Other than the motors, what is the differneces in these 2 John Deere models. Hopefully all you JD experts can chime in.