From what I have read (as I am about to purchase one) [link=http://www.acehardwarehobbies.com/2.2/catalog/product_info.php?cPath=18_33&products_id=5526]LOOK HERE[/link]. That has the info you are looking for. My understanding is the PBS PCR edition still has the 8 port, but has the purple cap which is new for that RTR kit and says its for extra protection, it also says that the intake pipe is upgraded. Go to that site and look for kit and read the captions below the pics.
Chris