A little mod i created that adds a very fuel efficient 1.5 Liter Boxer-4 Engine to the Sunburst. I dont really have any plans for this mod in the future so it will stay as it is. Here you can download it:
Well, it's supposed to be a Economical Boxer and i dont really see the point in trying to make it rev extremely high because it would end up getting inefficient but it would've been a good idea.