What's the difference

A buddy of mine asked me what the diffence was between a Durango SLT and the SLT plus, also the RT? I know the RT has the 5.9 motor but what are the other differences, especially between the SLT and the SLT plus.
Thanks :screwy:

I know that the RT has different heads than the SLT- puts about another 30 horses-I heard

slt plus has rear heat and leather seats