There was just enough clearance between the bench seat and the base of the B pillar for the retractor unit.

A: the Dodge Caravan height adjustable shoulder anchor requires 2 holes in the top of the B pillar. A fabbed plate with welded metric nuts is installed inside the pillar.

B: a Dodge floor angle bracket. I scrounged a dozen of these from Caravan wrecks in one boneyard along with the belts. These brackets are very strongly made and have the correct metric threads.

C: the convenient hole in the back of the B pillar base where you insert the support plate to hold the shoulder bracket. I fished a line down to pull up the plate which had two nuts welded on. The Dodge adjustable shoulder mechanism is held onto the B pillar by two Torx recessed head screws which attach through to the fabbed plate

Here you can see some detail of the access hole "C" which is big enough to feed the support plate up to the shoulder adjuster.

Note that the retractor unit is bolted through the floor with a Dodge caravan bracket (B) but needs to be secured upright to function properly. The 2 little 'ears' (D) on the top of the retractor unit slot into the grey colored fabricated bracket that is screwed to the B pillar wall. I will make up a protective cover for the retractor unit in future.

There's lots more Por15ing to do here and this will be all cleaned up before the interior panels go back on.

Note the bolt coming through the outer body panel near the top of the picture. This replacement hardware holds on the chrome strip. These are very different from the factory clips but still need to be sealed with plumber's putty to ensure waterproofing.

View of the unfinished rear seat belt setup.

D: angle iron plate with grade 8 nut welded on is attached to the body-roof connecting sill. This makes a very strong anchor for the rear seatbelt shoulder support "E".

F: slots carefully cut in the window bezel and under-window frame. A Dremel tool works well. Sharp edges of slots must be sanded or covered so that the belt is not damaged.

G: fabbed bracket, screwed to the bottom of the window frame holds the belt retractor at the correct angle. This bracket was too heavy and was replaced with a lighter version

H: belt retractor and plastic protective housing. Retractor must not touch outer body or there will be an annoying rattle.

I: main support bracket that I made up is the wrong length and wrong shape. This bracket must be bolted through the floor from underneath. Plates below the floor and wheel arch will give more support.

J: Dodge bracket attached to Willys factory anchor point with 7/16 inch course thread grade 8 bolt.

Finally, rear shoulder belt anchor through floor and wheel well is complete. Dodge belt retractor unit remains factory unchanged yet will be completely hidden by the Willys interior panel.

Great care was taken to ensure all angles are correct and that the retractor will not touch the outer body panel.

Detail of upper shoulder-belt anchor bracket.

A: This is a Dodge seatbelt bracket welded to a piece of angle iron.

Once inserted through holes(B), two bolts hold the bracket to the underside of the roof sill. A plate on top of the sill completes this strong attachment point.

I had to make a pair of access holes(C), so that the bolt holes could be drilled and the bolts easily tightened.

You can see the extent of the roof corrosion due to condensation and the typical rust along the seams. Cleaning up the seams will be yet another future job.

Here you can see how the belt fits through the passenger side interior window bezel/surround. The hole was cut large enough to fit all the hardware through without having to remove the belt webbing from the retractor unit.

The opening in the bezel is covered with a rubber flange (from the dashboard of a '68 Mini) so the belt will not fray even if it touches. The design is simple but it took hours to get the shape and position of the hole correct. As the belt is pulled forward and buckled, the webbing pivots forward about 3/4 inch in the bezel opening.

A problem still exists when the spare tire is in place as the belt has to remain slightly extended as it lies over the tire. There is a way to solve this problem...