Have you guys found that the stock water pump on a 4.0L is enough to get the job done after the radiator is moved to the back? Anyone found it necessary to put an inline electric pump in the system?
I was told when I was going to rear mount my radiator on my Toyota that I would need a high output water pump and a way bigger E fan. I'm not sure if it is the same for you but I would assume so.
regarding v8's, ford motorstport told me they used factory pumps on all their front eng rear radiator cars,you could probably do the same for the 4.0, but it won't hurt to get a higher flowing pump