I had the same seats in my coupe the 1st time I restored the car.
They came out of a 2nd gen Camaro. They fit easily except you need to mod the rear bolt connections to the floor as they go past the 68 bolt holes. I machined a steel plate that bolted to existing seat plate bolt hole and the another I had to bolt to rear floor pan. Very comfortable! Try to look past the cheesy seat covers and door panels.