Hi VXPAC,
I was running the same viscosity of oil (standard & synthetic) on 2 trips thru West Texas in the middle of summer. As I was driving in the middle of the afternoon with 100+ temps I found that my oil pressure did not go lower with the synthetic as it did with the standard oil. It was a noticeable difference proving to me that the synthetic was holding up to the heat better.
I don’t think you will se a noticeable difference in oil pressure between the 2 under normal driving however you will find the synthetic keeping your engine cleaner. And that’s important in this engine.
I have a write-up on the pillar gauge install if you would like it with part numbers & where I purchased.
Cheers