That's an interesting search for a FEL snow blade. Wish I thought of that, but I guess I didn't even look to see if they made one...
My approach was to buy a three point hitch adapter that quick connects to the loader arms. Not sure who makes it, but it's essentially a flat plate with the FEL QC on one side and a three point hitch on the other. So I can drop the bucket, connect to the adapter, and have a three point hitch on the front!
That plan revolved around the fact that I already have a spare reversible back blade that has tilt, angle and offset adjustments. It's a Land Pride RB3572. It came with end caps and having one one end capped is THE TRICK to using a back blade for pulling snow; maybe it's the same for pushing it too. Right now the plan is to leave this blade mounted to the forward three point adapter. Then when we need a front snow blade I drop the bucket and just pick up the blade. Actually the parts have been together now for a while now...but we haven't gotten enough snow the past few years to even test it out.
I'll admit to preferring "made in the USA" tractors and stuff, but gotta hand it to Kubota for the nifty quick change on this FEL. The M Kubota FEL has a standard skidsteer bobcat type QC, so just about anything that will fit any FEL will QC to this one. There are Bobcat attachment rental yards all over the place, their rates are reasonable, and all their stuff will fit the M Kubota.