When we ordered the block, didn't order it with lifter oiling. However, now that we will come to drag week, the plan changed. Have to get pushrod oiling upstairs instead of spray bars to survive. Thought about different possibilities with lines similar to thos in the pictures, but then one machined shop volunteered to drill the holes for us. However, they screwed it up a bit, everytime the drill bit pushed throught the lifter bore it guided the drill bit a little. The drivers side went upwards, and the passanger side down, and the two last ones went through to the cam tunnel... Not a big deal though, blocked the channel before them and will oil the two last ones with lines. The lifter bores will be sleeved with about .040"- .060" hole in each sleeve. The lifters will be Jesel. Should have installed an aluminum rod through the lifter bore when drilling and it would propably have turned out just fine, will try that with the next block!