thanks....the Duster picture is a little grainy (from 1977), I'm the blonde haired (then) 22 year old adjusting the valves. seems like yesterday. Here is one year before the Duster....in 76 ( I can tell by my license plates on my GeT-X), Running a tunnel ram, dual 660's / 4-speed / 12.5 compression (on pump gas) w/ 5:13s on the street.