I've started to research my interior reinstall and have run into a common problem of sourcing new or reconditioned seatbelts. I contacted Prestige Mustangs and apparently '93 notch rear seatbelts are as hard to locate as interior trunk lining. Prestige Mustangs suggested I try "seatbelt (re)webbing" which is the replacement of your old seat belt webbing with new webbing. LMR has new front seatbelts, but no '93 rear seatbelts. So, long story short...in all new seatbelt webbing in black ($74.99 each) and Seat Belt Restore out of Westfield, MA will repair one of the seatbelts which has locked up for a total of $365.