Its not ideal as the turbine shaft could snap due to being thinner than that of a garrett BB turbo. You could run the risk of it snapping with it in mind you may need to swap it out if it does.
Absolute no no obligation these cars. Unlike the older Garret T2 and T3 units the K03 an K04 units are far more brittle when it comes to the forces exerted on them when chopping air. Also worth noting that not having a DV will also make a mess of the fueling.