1970 dodge dart seatbelts

The first set you showed are the flip up buckles which are closer to being correct for your car if you adjust the length of the shoulder harness. It could be done by an upholstery shop.. The second set are the newer pushbutton style and would work, but wouldn't be correct for your car.... You can get a complete new set from several restoration companies such as Classic Industries. http://www.beaparts.com/list_items.aspx?body=A&cat=I&subcat=36 Take a look at these and they are brand new..