On another note I'm not saying it's mandatory.. but I think bushing the lifters is a smart move with the way that he has drilled the oil Galley through the center of the lifter bore.. it's very easy to get in a situation where the lifter uncovers the oil Passage
I'm not familiar with these and this may be a dumb question, but if the lifter bores interrupt the galley 100% and you bush them and block the galley, how is the crank oiled? Right side conventional and left side drilled through the center?