reverse thread ?

Hi, I remember hearing that something on a mopar is reverse threaded and can't remember what. Can anyone help? I tryed to get my pickup tube off today to install a new oil pump and am having a heck of a time. PB Blaster is now soaking it. I was afraid to put to much pressure on the tube untill i made sure it wasn't reverse threaded. What exactly is reversed on a mopar? thanks Walt:angryfir: