Urban Jeep Outfitters offers Hemi conversion packages for your Jeep JK, Jeep JL or Jeep Gladiator. We offer 392 Hemi conversions for Jeep Jk's with 5 speed or 8 speed transmission options. We also offer 505 hp 392 engine package, 606hp 426 engine package, 707hp hellcat engine package and 840hp demon engine package for the JL and gladiator platforms.