Stock Mopar Rocker Assembly... Sheeesh!

I have had good luck with the Crane forged doctile iron rockers. Very strong and inexpensive. The 1.5 verses 1.6 ratio, The pushrod is moved closer to the pivot(fulcrum) this gives more lift @ the valve from the same motion from cam(lifter). I believe there is no cost difference between the 1.5 and the 1.6 ratio. Slight increase in duration, but very little. In my engine the duration @ .050 increased only 1 and a half degrees using the 1.6 rockers over the 1.5. Good luck, Terry.