Pardulon models - All-Terrain Tractor "Kröte" - Is basically a British WW2 Quad Tractor. Needs a few guns and might be a bit small but other than that looks like a good replacement.
Bitspudlo.com - Bison APC - The Bison is without a doubt supposed to be a Rhino chassis alternative, with several building options available but I see no problems turning it into a Taurox
Warchimera.com - Hammer APC - Most likely a Chimera alternative but as with the Bison above, should work as a Taurox. Exist in a Hydra version as well.
Puppets War - Taurus - I find it quite ironic that Puppets War released a model called the Taurus some time before the Taurox. I have built several other Puppets War models so I can almost guarantee this this is a good kit.
Atenocitis Workshop - Hunchback APC and Kabardin APC - Two near future vehicles that might be a bit narrow and long but good looking none the less.
Khurasan Miniatures - Also as two Aliens inspired vehicles but I can't show them to you right now since the site is under maintenance.