What is the best way to install front seat belts on a 31 slant without going through the seat frame? I want to keep it moveable.
On mine they go between the seat back and the seat bottom, and fasten through the floor pan. I will be modifing mine so that there is a reinforcing strap under the floor pan that picks up the mounting bolts, spreads the load across more sheet metal.
I also used the bar stock underneath the car. Not a problem for the backseat but had to go through the front seat frame for the front bench seat rendering it unmovable. Other option is to go through the back of the front seat frame pan and fabric and with the bar stock exposed. Could jazz it up using chrome bolts.