Rear shoulder belts?

I didn’t get a chance to take a picture of my rear seatbelt set up. But I remembered now how I did it. I bolted the seatbelt retractors to the reinforced factory lap belt hold down the floor (this took a longer grade 8 fine bolt). The shoulder belt head went up and through the “slits” in the package tray. I used 2 pieces of thick Al bolted to the package tray so that the belt “head” would not go through the belt “slits” back into the retractors when not in use. I know this post is wordy but without pictures you have to add 1000 words.

Lastly, Know that I’m not a seatbelt or car safety expert in any way. I only take responsibility for the safety of my family when they ride with me and know that if I sell my car these shoulder belts will be taken out as they are definitely not a factory safety option.