I am assuming you are talking about a snow plow or pushing blade if so here are the models. if you are referring to a rear plow. I do not know those numbers.
46" Blade - Kubota G2003 front-mount
48" Blade - Kubota G2000 front-mount
No Problem, glad to be a help. Just as an fyi incase you have not seen it yet someone posted the WSM for this tractor in the forum. Download it before it goes away. the part number for the hydraulic lift it is Kubota #79840-31130 CYLINDER, ASSYl they do not sell it anymore you will need to find one used. I have seen them on E-youknowwhere. you will also need the hydraulic control valve that is part # 79840-41110 or this one 79840-11300