I've got a 36" in the back of mine. But it's laying down. It wouldn't fit standing it up (between the gate and wheel well). It barely fits between the gate and the seat laying down. If you had them behind the wheel wells (maybe even outside of them), you might still be able to pull of a single seat infront of/between them. I think it would also depend on how you plan on mounting them, roll cage, bedside, etc...