Hello all! This is a mod that adds the Ibishu Covet's 1.5L SOHC and DOHC engines as well as all of the intakes, turbos and two of the transmissions to the D-Series, H-Series, and Roamer. In my limited testing, I was able to get great*mileage. Special thanks to @Ali Hikmet for the idea. Since there's not much else to say, here are some pics!
Beta Covet Engines in D-Series, H-Series, and Roamer 1.0
The worst engine swap in the history of engine swaps