I'v switched gears from the Rambler lately ( waiting on parts ) and have been working on my '51 Chevy. I'v decided to put seat belts in it .. I'v got a set all picked out, artic white belts, with chrome aircraft type latches. from the same place I bought my Interior kit, so I know it will all match. $28.95 each... it comes with all mounting hardware, but how are they put in safely? There isn't any retractors