Since this has been such a questionable installation, I am showing pictures of this installation on a current purchased 2022 MR Transit van. This van was ordered with the 8 passenger seating (delete of the rear seats from a 12 passenger configuration) so this 62" seat could be used to give a 5 position child seat latching feature. On the 12 and 14 passenger van, you have 3 factory latching positions and on the 15 passenger , you have 4 with 2 on the 54" seat and 1 each for the 2 36" seats.
First thing is to acquire the 62" 3 passenger seat. Sources for this seat can come from the current Ford Transit CrewVan model and from the earlier model 2015-2020 SWB 10 passenger van. These earlier models can have the special 62" 3 passenger seat with the 3" to 4" recline for each seat. The 2015-19 models will have the Pewter Cloth, Charcoal Cloth, Pewter Vinyl, and possible Leather seating materials for the reclining 62" seat. The 2020 model will be the only one to have the current matching seat covers for the current models in the Ebony Cloth, Dark Palazzo Cloth, Dark Palazzo Vinyl, and the possible Ebony Leather seating material. The CrewVan model 62" seat will be limited to the 2 Cloth seating options and the Dark Palazzo Gray Vinyl seat being available for use.
Now for the installation! This one is pretty simple as with its 8 passenger seating, the area for the 62" seat is open for installation. If you have the 12 passenger seating, you can remove the 2 31" 2 passenger seats and then install the 62" seat in its place.