340 Aluminum Head, Rocker Arm Upgrade

I would also vote Trickflow.

I would also vote Mike at @B3RE
B3 Racing is a 1 stop shop, sells the heads, valve train and all necessary components, can machine aa economical valve train geometry correction, he is also a great source for info as well!

B3 Racing Engines LLC - Performance Engine Building and Mopar Valvetrains