Seat Belt Replacement

[Kvamen]

I've been looking for a replacement for a seat belt/rewind mechanism for a '73 240-Z, drivers side. I know that at this age, they dont have their original strength. Even a good working harness from a junker doesn't really thrill me since it's still a 30 rear old seat belt. I even saw a wrecked one in the junk yard whose seat belts were apparently torn off on impact. Ouch! I haven't seen anything but competition harnesses in catalogs. Are there any adaptations from other vehicles? Any suggestions? TIA

Doug Quammen, 73 240-Z:confused: