69 9 inch rear Questions???

[Sixty Nine Mach]

i have a 69 mach1 and i think it has a 9 inch rear but i want to be sure. how can i tell??? also i want to make the rear posi, so if anyone knows if there is a conversion kit or not, the information would be greatly appreciated.

 

[D.Hearne]

Jack the rear of the car up. If you can remove the bottom 2 nuts from the "pumpkin", "center section", "chunk", or whatever anyone wants to call it with a socket and racthet, it's an 8". If you need an end wrench to remove them, it's a 9". Posi units are available everywhere, just look.