The 68r is an amazing charger, if you are looking to add more throw a charger on top of it. You retain great drivabilty/spool with the added power. I'm a little bias, but I'd give Mark a shout and ask about the results the 485s are yielding! :thumb:
Those Stainless S485's are the most powerful S400 based turbos we have every tested by 100hp so I'm a little bias too! The sound they make is almost worth more than the power, lol!