Nice looking car. It's very satisfying getting these jobs done. You'll like the new webbing and you may like to consider just how tight you do it, maybe even different for driver and passenger side depending on how heavy each is. If it turns out too soft you can always pull it in a few inches but not the other way round.
If you reverse the bolts on the seatbelt mounts you can slip a piece of split rubber hose over them. Cheap, crude but neat and tidy if done right. Would be good to see what the reels look like fitted. Securon kit number #500/15?
Carefully prise the indicator lenses out of the speedo frame, cut the heat pressed bits off with a scalpel, and then use paint stripper.
http://www.volvoforums.org.uk/showth...=wrinkle+paint