Tell us about the box who built it for you is it aluminum or something different

Nice setup!

You can't get a radiator? I the tunnel cooler will be fairly useless on glare ice and on windswept ground. Other than that looks like a sweet deal. Should pull through the overflow no problem.

The aluminum box I ordered Amazon 98 buck 24x17x17 fit perfect used the rack that came with it that bolts in to tunnel. Cut it apart and bolted it through box and in to tunnel. Install face shield on front windshield have used for years and hold up well and block wind well . Also installed ice scratchers cables and bogey wheel kit to save the slide. If I have a over heat problem they make a kit to add bigger heat exchanger and I still have my 550 lxt for spring time . But I trap close to the Yukon here in interior so most the time it is supper cold and normally lots of snow.

Thanks I would have never thought to look on Amazon for that