[David]

The Garrett website is a wealth of info. You could buy a new turbine side housing with the correct outlet.

https://www.garrettmotion.com/racing-and-performance/performance-catalog/turbo/gtx3582r-gen-ii/

https://www.garrettmotion.com/wp-content/uploads/2018/05/GTX3582R_GEN_II_flange-diagram.pdf