If you're keeping the stock turbo? I wouldn't bother going full turbo back, just get the short or med size downpipe that covers the small part of the DP and the TP and a catback exhaust. The turbo exhaust housing on our cars is fine, and will def last longer than most aftermarkets.. And I don't think there's any power gains from swapping that exact part(on stock turbos)
Plus that install is way easier than the full DP..
This is the one I'm thinking of
http://www.maperformance.com/greddy-...ion-evo-x.html