The piston skirt shouldn't be any reason to relocate or modify the squirters as far as I can see.
Skirt on the Evo piston is much shorter and given the factory stroke I can't see how this would be an issue of interference. From searching, I assumed someone was making a claim that the squirters were improperly squirting onto the piston but I find that to be hard to believe given my understanding of how the oil cooling works in that instance.
I did have one more question and maybe someone can answer this one for me.
This discoloration is obviously from heating of the rod during the boring process to fit the larger pin in place. The heating looks fairly minor but for anyone who has had 1G rods bored out before in this manner, was this also present on your rods? Seems to me more care could have been taken in cooling the boring machine to keep the heat from doing this. I am marginally worried about the heat treating and how it will affect overall strength but not incredibly.
And one last thing. I have seen many pistons crack or loose part of a ring land, ahem...Subaru...and have inspected these broken parts for more answers as to why. Well when I got my 1G pistons back, I got a possible answer as to why the factory pistons seem to be able to take so much abuse.
They are really well cast. The casting is incredibly dense compared to many pistons I have seen. Some factory cast pistons I have inspected have literally had swiss cheese holes within the cast, a result of fast cooling I suspect or possible impurity. The three 1G pistons I have that came back broken, were all of the same internal quality and even though the fracture had exposed 360 degree on them I found no such disformation or pockets within the casting. In all honesty, Very impressed. When people argue about insane HP stock bottom end builds, point them to pictures of the piston 'internals' and maybe they will understand. Especially once compared to the Subaru cracked pistons I have seen.
Comparison so you don't think I'm blowing smoke. This is a 2.5 Factory STI piston with a busted ring land. Look at the pores.
That is all.
/brox