Is anyone aware of an after market manufacturer who makes a long range fuel tank for the Equinox?

 

This is all I am aware of

 

titan makes tanks for the trucks so search them. what you most likely will find is; there is no market for extended tanks for the nox and probably no room under the body.
depending of your model year...newer gens have split tanks than fit around the driveshaft...no room for anything larger.