After some solid attempts to get the motor to sit low enough, I knew it was time to notch the cross member. The LS oil pan is much wider than the small flat area gm designed into the very bottom of this crossmember. I'm running the MAST oil pan, even if I chose the autograft pan I believe it still would have required the same cut.
Initial cuts are across the frame parallel to the base of the motor mount then proceeded down the edge towards the flat base of the crossmember. Score/cut two small relief triangles front and back and bent those inward prior to hammering the area flat to widen the flat base area.
Little fresh black paint and she is good as new.