VGT to T6 manifold?

[AlaskaW900]

I bought a truck that has been deleted and they deleted the VGT for some reason. This set up Jake's as hard as a nat fart. I want to get a stock VGT turbo re installed so that I can recover the full potential of the engine braking. Is it possible to connect the stock turbo to a T6 exhaust manifold with an adapter? I guess the only reason for asking is it'd save me from buying another exhaust manifold, assuming an adapter would be cheaper. I do realize I'd probably have to have someone re calibrate the ECM and would at this time also have it set back to stock HP settings. If I'm barking up the wrong tree with this thinking let me know. If I'm simply stuck buying oem manifold and turbo and all necessary part then so be it. Thanks for your help.