You really only need to add 2 injector driver wires to your existing harness for cylinders 7&8. The other wire is ASD power to the injectors is common to all of them. Just splice into the existing harness. Easy as pie. Use a 96 & up weighted 5.9 flexplate so no converter change is necessary. Just have to file one bolt hole a little to get the offset lug to bolt up. Trim your fan shroud and shorten your radiator hoses and everything else should fall together. Motor mounts are the same as well.