Seat belt diagram?

[UKPlymouth]

Guys, ive been donated a set of Challenger seatbelts for my '73 Roadrunner, but haven't a clue how they fit together. Sounds dumb I know, but can anyone provide a seatbelt diagram so i can work something out?
Thanks!

 

[Cyty Slykers]

I need a diagram as well for my 68 charger with shoulder and lap belts