300 tdi into 3.9 auto

wondered if any one can help, disco failed on body work today beyond my welding skills. the engine runs fantastic and i was requiring some info on putting it into a 94 classic thats got a knackered 3.9 with an auto box (disco is manual).arethe engine mounts the same?will i need a different bell housing?elecrical wiring?propshafts? is the list endless or is it straight forward,any info would be most greatfull

the engine mounts and chassis pick up points are different but since there was a factory version the right bits are out there