Anything can be 'done'......
..as a starting point....
find out what snowblower /sub frame is supposed to mate with the B2920...
grab the 'parts diagram / lists'
grab the 'parts diagram/l lists' for the BX2816 and sub frame
see what , if anything , is common or used on both
Have to assume all Kubota tractors front PTO spin the same way and all snowblower do too ??
Probably take a wee bit of backyard bodging, heck, an interesting project !