You don't want to push the stock turbo past #35 so I don't think you need anything with the waste gate if you got a boost elbow with your plate that is for adjusting your boost pressure again you don't want to go over #35.
If you have 4:10 gears I would get the 3gsk's they help your govener de-fuel later bringing up your RPMs as a result your top speed.
what do you think of the DSS?
Joe