5.7 hemi swap wiring question

Is it in the car now? I understand that the transmission tunnel requires extensive modification for the 545rfe. If you are at the wiring point I will tell you that unlike the LSx guys there is no website that is going to walk you through the harness. The 04/05 harness & PCM are the preferred parts for the DIYers though so you have a good start. I am currently doing my own harness and I can tell you that unless you are good with research & reading wiring schematics you may want to consider an aftermarket plug & play harness.

Chas