An RX8 LS swap does highlight just how popular LS engine swaps are within the car community. We've seen European exotics, Japanese tuner cars, economical hatchbacks, or hardy off-roaders have their engines swapped out for an LS. This wide-ranging diversity and reach are primarily due to the LS engines' design. They're compact motors given all the horsepower that they have to give. Combined with a relatively minimal weight penalty, this makes the LS an engine that's compatible with most engine bays. However, there are some considerations before you drop an LS into your car. You'll have to consider the amount of space and engineering for other components that need to bolt onto that LS. For example, a suitable transmission, cooling systems, motor mounts, as well as other upgrades and moving things around.