Is that a smart idea......I mean if you pull the front left and right drive shafts off of a four wheel drive vehilce, and leave the front diff. drive shaft on. Your front diff. will still turn. And now the front diff. will turn without any weight or pressure being put on it. In my opinion that could result into burning up a front diff. You know kinda like jacking up your car putting the vehicle into drive. The rear wheels will spin a lot easier, taking the stress off of the rear diff. But running it at a high rpm, without any weight on the tires would result in possibly throwing out your rear end. Guess its not my buggy, but if it were me, I would just disconect the front diff drive shaft, and leave the two that run to the wheels in. Just an opinion.....

Wolv.