The internals on the AMG motor are MUCH nicer than the standard stuff. That's why you're paying the money. AMG = Add More Green.

The bell housing pattern should be the same. The only concern I'd have is whether the crank will accept the pilot bearing. I'd have to check with the techs to see if that's an issue.

NEWS FLASH... the pilot bearing should be the same size as the hub on the torque converter. Drop your pilot bearing in and have fun.