Posi needed!! Please help

When I bought my dodge the salesman told me it had a Posi. Slang for (Positive traction differential). I knew what he ment. The discription actually was Anti-spin diferential.

It is only the purest nit wits who always make a big deal of those who uses a slang to describe what they believe is correct.

I always here that term Posi its what the world under stands. Real Mechanics know what they mean . (Clutch style posi) or (Cone style posi) . Just saying??