SB oil modification question

Anyone have detailed information regarding the SB oil modification where oil is diverted from one bank to another with a cross over tube? How to perform, when to perform, etc.? Had info a while ago from Moparts but the link is no longer valid. Thanks.

I don't see the point in it. Oil is fed into the right lifter galley at the back of the block, it runs forward in the right galley while feeding the mains on the way. When it reaches the front it goes down to the #1 main and then back up to the left galley which is only for the lifters. The left side galley serves no other purpose and since it's way down line of the right galley it doesn't make sense to cross anything over. If you are running solid roller lifters or even solid flat tappets you might as well just block the oil to the left galley.