Not many company's make rockers that allow push rod oiling. My short block was already in the truck when I decided to switch to the Trickflow heads. I didn't want to mess with the short block so I went with the push rod oiling Route. Which so far they seem to be working fine. My 360 has seen 7300 RPM a few times. Lol I still haven't got my converter pulled and sent off to get redone. To me I guess if you already had the Rocker set up and push rods for LA shaft oiling. I woukd of just had the block drilled. But seeing how I didn't have anything I just decided to go with push rod oiling. Pluse my engine with the Engine EQ heads was already set up for it. If it matters comp makes stainless steel rockers that allow push rod oiling, but only come in 1.5. My PRW you can get in 1.5 or 1.6. Harland makes rockers in 1.6 but you are getting close to $1000. Then Jessel and TD rockers which i take it are lots of money. I think the 1.6 PRW rockers with the correction kit from Mike at B3 racing was around $650 shipped.