I need to get a family vehicle and have decided on the ford excursion. I want to put a common rail 5.9 in it. So my main question is which excursion to buy. The gas ones go for way way cheaper than there diesel counterparts. are the axles and stuff in the v10 excursion similar to the diesel ones? what about other parts? Can a gas conversion be done economically or would i end up paying more in the end by having to upgrade parts?