When I did my 5.0 swap one thing a failed to do was write down the donor vin number, if anyone has a 5.0 in their ranger from a 97 mountaineer or maybe an explorer, not sure how much difference older or newer makes can you tell me the part number on your mass air flow if its efi , not carb. ive been told they have 2 different parts, one ends in da, the other in ba..don't know what the difference is. I got one from ebay, its got da at end, it runs better but the too lean code came up again