What headers do you have? I guess I need to go out and look under my car. A picture is worth a thousand words. My RJC worked with no modification. I got it because I was running stock mounts and racing the car. Band for false KR.
I see way less oil. With valve up or closed can you depress that lifter by hand by pushing on the pushrod side of the rocker with the palm of your hand? Should not move ,but if it dose it will only move less than a 1/8 of a in.
You should not be able to depress the lifter, if the piston in your lifter is stuck it will depress very easily. Unplug the orange wire by the battery and pull fuse on your Hotwire so not to wash cylinders down and roll it over and check them again and repeat a few times.
You have good oil...