Go on EBay and search "Jeep Wrangler YJ CJ Passenger Right Seat belt Female Receiver cj5 cj7 Scrambler". It is $30 and has free shipping. Buying that one will save you the time consuming headache of looking all over for one.
Complete rebuild axle/engine/everything swap in progress: Building stock width 44's with 302 from 01 Explorer. Motor has GT40p heads, Cobra Intake, and truck cam. Running A9L EEC IV stand alone engine from late 80's-90's Mustang GT. Big Bearing NP435 married to NP205.