I have read that JD offered a 50" mower deck for the 420 tractor. I have a very low use(3 seasons total of light use) 60" mower deck off my newly bought 420(534 hours on the clock). Runs quiet, discharge chute never even used, even have the original manual for the deck. Would trade straight up for a really nice 50" with either low use or all new bearings. Must be quiet running, good gear box and ready for use. Either the Mid mount or the rear 3pt 50" finish mower for 2000rpm PTO. Open to $$ offers as well.