42" mower on a B212??

hi every one, i havnt gone to pick my b212 up yet because of people's "summer schedules"... but i was wondering if it'd be possible to go from a 48" mower deck down to a 42" without much hassel and extra brackets, hardware ect. i know these decks have a very simple mounting mechanism, so would this be possible? i took a quick glimps at simpletractors.com "what fits" section and i got confused with all the numbers and what not...:00000060: please excuse me if its actually alot more simple then it looks. any imput is great, thanks.

i'll ad a pic for you...