I'm looking into a pusher for my Massey Ferguson GC2310TLB. Its a light machine at only 2500# or so. I have the quick attack blade, but I think for stacking snow the pusher will be better. I have 1 small commercial account, I think it will work the nuts. I am looking at a small manufacturer in Syracuse, I found them on Craigslist, it's only 5', the same size as my blade. The quick attack only allows the blade to raise a few inches. After my purchase I will post again!
I have a BX24 which is simalar to your GC. I tried a wooden snowpusher made out of 2X12s and IMHO, I think a pusher really suxs on a small compact tractor. Don't get me wrong, I loved it when I first used it esp in light fluffy snow since it was heck alot better then a FEL alone or backblade as I had 6 ft swath and can push snow up and over the snowbank. When the snow was wet and heavy, Sometimes I would have to push snow aside every 5-10 ft to "punch through" .
The BX and GC is just a tad too light- its has alotta power, but it just not heavy enough to push all that syracuse snow all season with a snow pusher alone.
I ended up getting a truck plow and modified to fit on my FEL arms and I never looked back. IMHO, its the best setup you can have without spending tons of money on a blower. I can angle it and just plow on through, no stopping. You might want to look at BXpanded website as an option for your tractor.