Ok, here it is. A week later than planned, but done and photographed as promised. I'll walk you through it...
First, go here: http://www.gotbelts.com/relapsh.html and buy 2 shoulder belts and 2 hardware kits.
First thing first - Remove the old seat belts. This is not as easy as it sounds. You'll need a big Torx drive (50) to remove the bolts and I had to go to at least 6 different stores before I found one here. The next problem is that the bolts won't want to come out, no matter how hard you crank on them or how much lube you use. I ended up cutting the 3 of 4 bolts off. This is where the hardware package comes in handy - you'll need the bolts and washers + the L brackets.
Stock Belt
Stock mechanism, notice it's bolted at the top.
When you get the seat belt mechanism out of the pocket in the wall of the cab you'll be left with this. One bolt hole above (stock belt used this one, the bolt has been cut off in this picture) and one below (this is the one you'll use).
Replacement seatbelt:
Before installing the new seatbelt, you'll need to remove it's black plastic covering so that it will fit in the hole (no big deal, it just pops off). Then mount the mechanism with the bolt at the bottom. Don't forget to use a big fender washer for rigidity and a lock washer with the bolt - all of this is supplied in the hardware kit. . This will make the seat belt come over the top, but if you try to put it in right side up you'll not get the belt through the hole on the factory cover.
New seat belt in place.
With cover on.
On the bottom end you'll need to use an L bracket from the hardware kit. This part is pretty self-explanatory, though I'd suggest you remove the plastic sheath from the old belt and use it on the new one (like I did).
One thing I discovered during this it that even though the new belt buckles are different than the stock ones, the belt will latch into the factory buckles. I don't really want to remove my seat to get to the other end of the belts, so I left them alone and buckle the new belt into the old buttons (hopefully that made sense).
All in all, it's not too bad, though it did take quite a bit more time than I expected due to stuck bolts.
Good luck. I hope this helps. Feel free to ask me any questions...
