That's odd. 300M's only come with 3.5L V6 motors. 263HP I do believe. Not quick, but no slug either.
Now if you are talking about the 300C with a Hemi, they aren't slow. Not the fastest cars on the road but good work.
And if you are talking about the 300 SRT-8 and try to tell me you tied him, I'm going to have to laugh and call you a liar. Those 'boats' come with 444HP.
I'd really like to drive one.