Quite a few have tried compressor swap or "super stock turbos" and all have had big issues with minimal gains. The only exception that does decent is the Pumaspeed x37 or x47. But it's Euro company, so shipping is killer, and if you wanted to get your core charge back, will nevver be worth it due to shipping etc.
At the end of the day, there is no great value turbo swap at the moment. ATP Garrett isn't bad, but not a great bargain either.
On the horizon (prototypes already tested, being made as we speak, as far as I know) is the BNR turbo offering. On other platforms they are the go-to and are a great bargain. Think journal bearing GTX2867, and hopefully retain stock oil and water lines and otherwise be plug and play. We don't have pricing or really any public results on it yet....but I am optimistic.