This interior seat foam for all 1973-77 Firebird models with deluxe interior with horse collar-style bucket seat bolsters is a critical part of upholstery restoration that is often overlooked. Replacing your seat foam not only offers you a more comfortable place to sit, but also generally makes for a better fit and appearance when replacing your original upholstery. This seat foam is manufactured as close to original density as possible for authenticity and fit. Take the hassle out of in stalling your new set of upholstery by adding this OEM style seat foam. Each seat foam is molded with correct contours to give your seats a quality original appearance. Note: Must reuse original headrest back foam and re-glue it to the new seat foam. Shipped oversize. Applications: