I am heading up north and will need to get some kind of engine heater. I have read past posts and see that the main ones are: one that connects to the hoses and heats the fluid, one that replaces the freeze plug, one that sits in the oil fill, and one that sticks to the bottom of the oil pan.

I would prefer the one that replaces the freeze plug. Chrysler says there is not one available through mopar. Mercedes in the South says no, but the one in North Dakota says they have them, but doesn't know if they will fit the Crossfire. Can anyone please verify this or add their input.

Thanks!