Not without a lot of work and $$$, your looking at swapping the chevy engine , mounts, electrical harness, PCM etc. Look on the Jeep forums to see if anyone else has done it. Might not even fit. Why not just put the same type used engine in it's place, a lot cheaper and less headaches.
Search Jeep Grand Wagoneer Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Jeep Grand Wagoneer Experts