I have installed 1/2 of my new seat belt. The part that was broken has been removed (thanks to my trusty new ratchet set) and a new one has taken its place. However, the old seat belt and the new do not fit together, so until I have the other half installed, it is just as pointless as the broken one. (Currently I'm buckling into the passenger clip when I have to drive.)
The shoulder harness half will be installed as soon as I can: 1. get the horribly rusted bolts removed (and replaced) and 2. figure out how in the devil the upper attachment works.
It felt very cool, though, to be doing my own car repair. This is something that was supposed to cost over $400 if I'd had the mechanics do it for me. With parts, shipping, and tools, I'm at around $100. Plus I get that warm fuzzy sense of accomplishment.
Of course, installing it myself means that if it fails in an accident and I die, my next of kin have no one to sue but me. ;) (KIDDING!!!! Mom, Dad, don't worry. I'm pretty confident in my handywork.)