Two-point, or lap-only, seat belts are the simplest of the simple and are usually the least expensive option available for any seat belt application. Often the best place to start your seat belt selection is to choose the style of buckle that you'd like. Plastic "push button" buckles are the least expensive option. "End Release" buckles are more expensive but give a more modern look. "All-metal" push button buckles with or without the GM logo give a wonderful retro look. The "Lift latch" style buckle is often referred to as an aircraft style buckle. It is a recognizable classic style and is always popular option especially for classic car restorations.
Non-Retractable Seat Belt with Metal Seat Belt Buckle (Starburst or GM Logo)
Non-Retractable Seat Belt with End Release Buckle on a Cable or Bracket Stalk
These retractable seat belts roll up and store all the webbing when not in use. All but the "Traveling Retractable" seat belt utilize a style of retractor that's known as an "automatic locking retractor." This type of retractor is locked as soon as you put it on and will only unlock once you've allowed the seat belt webbing to retract fully back into the retractor housing. These aftermarket seat belts are available in three main buckle styles - plastic push button, metal push button, lift latch and end release.