beyondthedyno.com’s Eric gives the scoop on the differences between the Genesis Coupe’s 2.0t and the 4B11 from the Evo X.  A snippet:

1. The Hyundai 4B11T is not the same as the Mitsubishi EVO X 4B11T. While the Hyundai 4B is similar in many ways, there are very few common parts. The block, head, pistons, rods, crank, etc. are all similar, but different. Different in that they are lower grade. Hyundai’s rods are powder sintered whereas Mitsubishi’s are forged. Mitsubishi’s pistons are made by Mahle and have a oil reservoir underneath the dish like a Porsche turbo piston. Hyundai’s cast piston is no different in strength compared to one of their passenger cars. Hyundai’s 4B block has far less webbing (this is visible from the exterior). The differences go on and on. That doesn’t mean the Hyundai parts suck. It’s just that the Mitsubishi 4B11T is way better out of the box. While the parts are different, that doesn’t mean that the Mitsubishi pistons, rods, and crank cannot fit into a Hyundai 4B.

2. The cylinder head is different enough that the exhaust manifold and intake manifold flanges and gaskets are not common. They are absolutely different so there will be no manifold and turbo swapping. This is an absolute fact since Gary tried fitting the manifolds from an EVO X. The Mitsu engine is mounted transverse and it is very likely that the castings wouldn’t work anyway. That’s too bad since the Cosworth EVO X 4B11T CNC ported big valve cylinder head will be available to the public soon. See #6 below on the cams.