Seat track interchangeability B and E body
 

I'm having trouble finding a drivers side bench seat track for a '70 Roadrunner however I have found a reproduction E body bench seat track set, does anyone know if the '70 E body bench seat track is interchangeable with the B body?

I'm told that they are not interchangeable, if anyone has a clean and functional driver side track for a 68-70B body, pls. let me know, thanks.