If you have the wire harness and all the other parts, it is a job that will take you a day at least a day. It is a direct bolt in process. Just make sure you have Everything before you get rid of the donor. I did this and I love it. Dont forget about the power lock in the lift gate. Go for it.
I just checked the parts numbers 87 to 90 are compatable with each other 90 and 91 are not compatable. It still can be done. You will most likely needmore than just the wire harness. You will most likely need most of the plugs that the harness plugs into for the lift gate. when you cut them off make sure there is enough wire to let you do whatever you have to do to hook it all up. You could also take the harness out of the lift gate in the donor and trans plant that as well, that might make it easier in the long run.
I would still do it. Theres nothing like options