In final stages of preparing my '69 Mach 1 for the road. New Cobra "Daytona" front seats allow use harness restraints. With fold-down rear seat style, any recommendations where to properly connect shoulder belts and still allow rear seat to fold? Not considering roll bar. All manufacturers recommend running straps toward rear somehow instead of straight down to use same bolts as lap belts. Have not chosen brand of harness yet.