The belts I got were spec'd out and installed by Alumicraft.
The problem is, is that my car isn't very wide and having plus-1" wider, makes the seat to side panel area tight.
Once I have the seats adjusted, the belts hold awesome.
I put new Simpson (pull-up lap belt) belts, along w/Jettrim extra high containments in my car.
I personally don't like them because I don't have any room to reach in between the seats and side panels to adjust them.
I have to adjust them through the plastic belt socket hole on the seat...which...
No matter what type of relationship or terms you have w/ your sister....money and family don't go together!!!!
Make sure your parents have a living trust and a will !!!