The conversion parts from Advance and Duff are designed for 97 and earlier Rangers.
Engine plates and engine mounts from a 5.0 Explorer will bolt into a 98+ Ranger IF
it is a 4x4 or other Ranger with torsion bar front suspension.
98+ 2WD models that have front coil suspension will need custom mounts. Nobody makes them commercially but you can get plans from BrianB31, either here or on RPS.