rocker arm ratios

After searching through a fifteen year collection of Hot Rod Mags trying to find the article in question I came across my own answer! The rockers were listed in the Mopar Performance Six Cylinder Engines book ! Much to my dismay they were for the 3.9 V6 not the/6. I appreciate the info you all helped me with though. My car a 74 Duster has been a work in progress since 1996. I've gathered all the parts through the years and I'm finally going to complete it ( hopefully ) this summer!