exactly...what was different between all the 413s?

heads,cam,intakes...correct?

I will run one if I ever come across a "used" one,put it to work like it was built for in a truck to pull my hotrods around.

I gotta think a 413 would do something if it was tuned right,may not be the fastest around on the street...but I bet they would be chasin after it to get in front

or just put it in the mud truck and use the torque

to many opions out there to keep beating the horse,its not getting up

that we dis-iagree

I run anything mopar fellas,beets driveing brand x at any time

those 413s can bait them up and the 440s can shut them down...lets work together here

run what ya brung