I just picked up a BX2360 off Craigslist and am in need of a bagger for it. I found 2 used ones on Craigslist that are the GCK60-23BX. This is the correct model, right? One of the guys that has it for sale had it on a bx1850 w/ a 54" deck, the other on a 2320 and I'm not sure of the deck size...