I have a 87-88 Buick lesabre 4 door sedan. Which headliner kit shall I purchase for replacing my headliner? It is a grey interior.

The 1988 or 1987 Buick LeSabre car would take the full sized headliner kit. If the Lesabre has the 2 panels in the back of the car,  just behind the rear seat; you may want to order an extra 1/2 yard for these panels. The color gray would most likely be 2165 light gray (which is a medium light gray).