Get rid of the uppipe first! If you still have the cated one it can fail and ruin your turbo and or engine. I would do a UP and DP with a reflash and maybe a tad bit more boost and not drive the hell out of her. Save for a engine rebuild. Just build the hell out of a 2.0 with a lot of reinforcment to the internals. You can do a 8,000rpm 2.0, a lot cheaper than a 2.5. Thats when i would do a bigger turbo. I blew my 2.0 at just over 101,000 with a bit over 300WHP. I drove it hard and had a s*^ty tune for 20,000 though. Good luck!