it all depends, the other guys don't have the pesky smog stuff to deal with, but the late 70's trucks were under rated horse power wise. These trucks can be made to run like the late 60's earily 70's cars with not too much effort. But keep in mind, these 440's in the trucks were TORQUE MONSTERS, hence the smokin tire action, but hold on to your butt when you have some sticky tires, because they will launch hard and were good for hi 14 second passes with sticky tires through the 1/4 mile with all of the emissions junk that good ol' California put on them, and besides that, some of the 440 trucks look like ordinary trucks that people wouldn't look twice at(of corse not the one's on the fourm though....lol).