REAR shoulder belts, 3 point.

[Kern Dog]

I'm only putting the shoulder belts in the left and right side. The middle belt will remain stock.
I attached the end of the belts to the stock location near the floor.



The anchor bolt was this design.



Note the area of the shank above the threads where the size is bigger. I had to grind the unthreaded area down to allow the bolt to slip through the bracket at the end of the belt. It works though.



Both sides are bolted down, the belts extend and retract normally.





This car was the test mule. I will do this upgrade to other cars in the future. I will need to cut holes in the package tray for the plastic belt guides...



So far, ONE car can be done for under $100 in materials including two sets of seat belts from the junkyard for $75, sheet metal for the mounts and a few nuts, bolts and washers.

[Kern Dog]

I didn't like how short the belts were, the ones with the receiver latch.



I'd prefer that they were longer and stuck up between the seats a little more.
I found that these came in different lengths in the Charger/300/Magnum cars but I haven't nailed down specifics.  One thing I noticed about newer cars rear seats....they are often just molded foam without a steel frame like our classics. Maybe that is for weight savings?
These belts are unsupported from the mount to the receiver latch, just nylon without the plastic/vinyl covers like here:



In our cars, the lower seat section slips under the bottom edge of the upper section. This does sort of trap the belts but they can still slip around. I wanted to extend the belts so they would not get shoved in between the seats and hard to reach. Plus, with the ends so short, it isn't so easy connecting the buckle into it, especially for a fat dude.
3/16" steel.....



A couple of bends to it, then clamp the belt to it to mock up....



Test fit of the right side....





The right side sits out about 2 1/2" longer than the left side.



Once I add a sleeve around the belt, it should allow me to click the belt with one hand like a newer car.

More to come...