It has been done before - But it's a load of work just to get the engine to sit in the bay.

If you really want a 4x4 system to mate with the V6 see if you can get a written off Jaguar X type. The engine is based on the same design - although not many parts are direct swaps, so it won't be easy.

I hope you've got serious skilz, and/or very deep pockets!