Probably, the best place to start would be by calling
http://www.hotwireauto.com/ and talking to Chris Squire. He can tell you if they can build a harness to make that 5.7 work in your truck. You may have to swap lifters or something, and disable the VVT stuff. Another place called Hotrod Lane installed a 5.7 in a Ramcharger, and may have motor mounts available to drop your Hemi in the truck. That's about the extent of my bright ideas....lol. Good luck. :prayer: