Why would I put oil in the left galley when I run a solid cam, bush the lifter bores and run a -6 feed line from the rear of the block to the very front of the right galley, effectively feeding it from both ends to correct the effects of oil having to run the gauntlet from the rear to the front of the block? Call it a crossover, I'm just feeding the front of the right galley, keeping ALL the oil in the side that matters, rather than taking any detours.