Originally Posted by flyingputz
I've got the Comp pro magnun chromoly self aligning full rollers. #1317 if I remember correctly. These went out of production some years back but I found a set of NOS at a reasonable price.
The 1317 seem to still be in production. They are mentioned by Sallee specifically as an option for the production Vortec heads:
In any event, those rockers have wider alignment rails compared to a rocker like the Comp p/n 1015: