in todays world, as it was before it took off like an old man even if my son was driving it !!!!! The van has a lot of pedal and not much response !!! :D
Running 1 1/2" primary tube headers with a 2 1/4" exhaust system will scavenge the combustion chamber not only faster but more complete. A better set of rocker arms something like the 273's use for a more accurate valve lift