I was told that it is not just a "plug and play" swap. For starters, I would replace the pump as an 25 needs more fuel but as far as wiring goes, I was told a few things have to be changed. ECU of coarse which would come with the 25 motor anyways.BigC_1988 wrote:When doing this should do I have to change anything? Like fuel pump differential ect??? Or just "plug and play"?