I have the 54" blade for the 455. it is the same plow just a diff. mount. so anyhow it pushes well, we had over 20" of snow in one day and the plow pushed it like there was 3" of snow. i have a really steep and long gravel driveway that i plow and it does great. I would spend the extra money to get the 4 way. but why are you thinking of getting rid of your 2320???