LA heads on Magnum block?

on my 2000 360 magnum that's in my 91 Dakota sport. I have Trickflow heads, comp 260 at 0.050 solid lift cam, PRW 1.6 roller rocker arms and 3/8th oil through Smith brothers push rods. also my lift is 594. if I was starting with a bare block i would of liked to had it drilled
But why, if the pushrod oiling works?