after market 3 point seat belts for front and rear

[SR77]

planning on replacing my front bench with some procar 90 series buckets. when I do I want to upgrade the seat belts. is there a go to manufacturer for mopars? I've come across julianos.com and a few other manufacturers but wasnt sure if there was one better than the other when it comes to quality.
Also anyone install 3 point rear seat belts in a 72 demon before?

 

[72Valiant4Door]

As far as I understand installing 3 point rears involves a little fabrication. For the fronts you can use conversion belts originally made for dodge vans.

 

[SR77]

doing a search i came across an install tutorial for a 70's mustang. they just drilled through the rear package tray shelf to mount a retractable seat belt. Install 3 point rear seat belts in classic 1964-73 Mustang

i cant imagine it being too much different