If you've ever been disappointed by the horsepower figures coming from your Jeep Wrangler JK, whether it has the 3.8-liter or the 3.6-liter V-6, and you've considered an LS swap, you're not alone.

The early days of LS-swapping were hard. There was little to no aftermarket support, and even simple things like clearing crossmembers required modding the factory oil pan and other bits. By today’s ...