https://www.ecstuning.com/b-assemble...SABEgIyzfD_BwE
complete stock kit woth upgraded wastegates
https://www.pureturbos.com/store/bmw...e-stage-2.html
pure stage 2 turbos for 4k now these r Fu*** sweet. which comes out to 6k installed and are lightyears superior to oem in my opinion but i think the ecs route is more for you... with stock turbos you can achieve 450whp