In order to keep my cayenne on the road (not salvage yard)due to transfer case fail , can this be converted ?? I've seen range rovers and 4 runners but never a cayenne. I've heard that the transmission goes wacky and is not possible. I read others say it will work with limitations and performance loss. I'm not looking for perfection here , just a way to extend the use of this base model v6 with 200k.