Those seats are correct for a 70 E body. The latch, hinge cover and seat cushions are identical to the seats in my 70 Cuda and the first 70 Cuda I had. The first 70 that I had was all original, I know because I bought the car from the original owner. They are not even close to 72-74 seats! As for the tracks, they are probably B body tracks as they certainly aren't E body tracks. It's a good possibilty the seats came out of a 70 B body, the seats in the 70 Roadrunners and GTX's were real close to the E body seats, the only difference being the tracks and seatcovers.