They do look cool but I made my son take them out for safety reasons. Unless the shoulder belts are mounted to an upper bar, they will just move forward with the seat backs (he had the shoulder belts attached to the lap belt mounts) and you'll be kissing the wheel or dashboard. The stock belts are designed to work with the airbag system. Nice for show, questionable for go. Just my $0.02.

 

I left the stock belts in the truck and they are still 100% functional. I use them for going down the road as they allow me more freedom to adjust the radio and so on and so forth. The shoulder harnesses are mounted to the back wall right now. I am fabbing a bar for the back to mount to the back wall as well as the floor. The shoulder harness will be mounted to that when I am done.