I stripped all the hardware off of my new AFR 185 heads and sold it a few months ago. I have bought the recommended spring kit, per Ed Curtis. I need a set of rocker arm studs now. The stockers on the AFR's were only 3/8". I will be buying a set of 7/16" to replace them. Question is, which ones do I need? I will be using comp pro magnum rollers and stock valve covers. I've heard about buying longer sets, is this needed? My machinist prefers Manley products, so any recommendations for Manley or ARP are welcome, or just some over all needed measurements. Thanks, Joe @84Ttop @ricks91gt anyone?