The pipe between the turbo and MAF should usually be around 6 inches.
It sounds like you're saying that the pipe between the two items should be at least 6 inches at a minimum, right? It could be longer and still function properly.
The same goes for the later Z with a MAS. The pipe between the throttle and the MAS should be at least 12 inches long so that the airflow seen by the MAS is a steady velocity.