1970 440 Police Interceptor?

Guys,
I just found/stumbled onto a 1970 440 Police Interceptor....NO car, just the engine! Question, is this a special engine? WHATS so special if it is?

The owner is the same guy that has that orange 1970 Roadrunner, thats got a 383 under the hood.....I'm just wondering if I should grab this if at a good price! (I have not seen this motor to be able to touch it per-say, BUT....) I'd like to know if there is something to it I should look for, as I am sort of interested in this motor...... It supposedly, also has the transmission on it too!

ANY help on this would be GREAT!