Well, the exhaust flange ain't the same. The wastegate is in a different location relative to the the exhaust impeller, the water and oil lines connect in different locations and its flow characteristics are entirely different. You gotta have completely custom made manifold, completely different custom downpipe, completely different linkage for the wastegate actuator, and maybe a different actuator (because of length differences) and a completely different ECU tuning. Other than that, I'd say go for it.
Or you could get something that actually fits.