We are thinking of putting a hitch on our '02 300M.
Reese doesn't make one for the 300M, but both Draw-Tite and Hidden Hitch do; I assume that the Mopar-branded hitch is merely a rebranded and overpriced version of one of those two.
Any reason to prefer one over the other? All we expect to tow is a small trailer for taking yard waste to the dump and for bringing purchases -- not heavy but too large to fit anywhere else -- home from the store.
Perce