If you want to upgrade the turbine, it would be extremely simple. They make that same turbine housing in GT28 size, I have spare GT28 genuine Garrett turbines sitting here from turbos we bought, and robbed the internals out of. Depending on the size of the compressor they use. It would be very easy to upgrade your unit to say GTX2860 spec, GTX2863 or GTX2867 spec. We have all those wheels in stock. Response will suffer, but it would hold boost nicely up top. If you are interested drop us an email we can gladly quote you for the conversion.