anyone know if the clutches are the same for the 4.0L 6spds as they are for the R series 5spds? What I'm contemplating for my tranny swap is using a 4.0v6 flywheel and clutch if it will match up to the splines on the input shaft of a R150f. This is cause my diesel flywheel is almost impossible to source and the clutch is different too, but if I can get those parts here in the U.S. of A. it would be awesome!