I have never used the new 3 quart one I bought yet, I will install it into a #12 AN Tee on the return line going to the block, not the pump side , from the remote (#12AN) oil filter line
I did install one on a customers 426 street hemi motor years ago by drilling the rear of the stock drivers side oil passover passage a little bigger( from 1/16 or maybe 1/8 NPT) to maybe 1/4 NPT
But looking back now I think it should be used on the front of the motor to feed oil into the motor from a bigger line like when being run , not from the back through a very small hole
I think it needs to supplement the oil supply when needed if the pressure drops enough to allow it to work, not fight the oil pressure coming in from the front of the motor from the oil pump when the pressure drops a little I hope this thinking make sense