Hi,Maybe somebody can help me id a posi raer that I have and want to install in my 51 Chevy coupe. I now have in the car a open small Camaro raer and a friend gave me this posi. I have tried to locate what rear it is and before swaping (cut/welding) the spring plates I would like to make sure what rear this is. The axle tube ID says GY G015 1W. Any help please? thanks,Davey