Generally
Knot cross in original design with grease nipple. The intermediate axle is articulated in the middle and this joint is located at the rear closest to the rear axle. For 1 car, 1 junction box of this model is therefore required.
This knuckle only fits intermediate shafts that have knuckle locks on the outside of the yoke
You need to look at your intermediate shaft to be able to determine what locking you have on the knuckles. Unfortunately, the only way, the easiest is to check the front or center cross on your middle axle.
Then compare with the pictures of the locking ring types.