The 2.0T/2.4T engines of Mitsubishi, Hyundai and Chrysler/Dodge were really developed as a joint venture. At least the engine block of Mitsubishi 4B11 and Hyundai Theta II is same. The block itself was even designed by Hyundai. Therefore if Hyundai used Theta II with shorter stroke as a base engine for R5 it's the case mentioned in the article.

