I had a pair of the 10 way adjustable leather seats from a '93 Bonneville SSEi here. I tried to fit one into my '84 Monte SS. The Bonneville seat was too wide to fit into the amount of space between the console and the door, with the door closed. It looked cool, but it wouldn't fit. I ended going with seats from a '96-'98 Pontiac Grand Am GT. They fit the G body seat tracks perfectly, and they look good. The driver's seat has a manual lumbar adjustment. I have an '80 Malibu, and I have early 2000s Sunfire seats in it, and they're pretty comfy too, and they bolt right in. As others have said, there are many different seats that will work in these cars.