If I'm not mistaken, the motor mounts are different on the 6.2, which is why it's not as common on the NBS vehicles. The 6.0 is a direct swap and will drop right in using the existing motor mounts, hence the reason it is so popular.
I'm sure the 6.2 can be done, it might take some fab work though.
I'm sure the 6.2 can be done, it might take some fab work though.