Spray bar design help

Can anyone on here tell me how they designed and built their valve cover spray bar oiling for a big block using Indy heads and Jesel rockers I have tried ordering the indy kit but they don`t get back to me. I have a 540ci pump gas engine with Indy EZ325 heads and jesel rockers. How do you setup the spray bars themselves eg tube diameter, sprays in the tube etc etc