I don't have pictures because I ran into this very early in the Magnum block production. The block I had did not have the oil port drilled through the block to the cam bearings. I took an LA head in with the block to my machine shop and they used the head as a guide to drill the holes in the block from the head surface to the cam bearing holes. New cam bearings were installed after the drilling process was complete. I don't remember the price at the time, but I remember thinking it was quite a deal. Of course, I had a long standing relationship with that machine shop that likely resulted in some of the positive results.
I put 40,000 + miles on that motor before I sold the car it was in. Gene