Does the 1500 Mega Cab have the Trac Lok or Trac Rite LSD? I'm always running into problems regarding 1500 and 2500 parts compatibility issues with the 1500 Mega Cabs. Even the Dodge dealer has screwed up a couple of my orders through Mopar for parts that supposedly were compatible. Question being I am adding RP gear oil to front and rear pumpkins...and it seems that fill amounts are different depending on the LSD type. Also one requires friction additive and the other doesn't...although RP states it's already incorporated into their gear oil. I suppose it won't hurt if it is a Trac Rite....very confusing stuff here. Thanks for the help.