Yes providing you swap some stuff from the Bosch engine to the GEMS engine.

You'll have to swap the plenum, camshaft gear/cam position sensor, flywheel, crank position sensor, knock sensors on the GEMS engine to the ones on the bosch engine. Probably a few other bits and pieces that I've forgot but it's pretty easy.
 
Thought the 4.6 had a different gearbox? Will it take the torque?
 

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