My 422 smallblock build

Progress has been slow lately.
Got all rings gapped and installed on pistons. Top ring gap is set at .021 and second ring is at .022 in anticipation of up to a 150hp shot of the giggle gas. These numbers were supplied by Total Seal in their instructions.
Now I’m waiting on a 1/4”x6” drill bit to come from the Amazon gods. I was eyeballing the cam bearings the other day and noticed that the #4 bearing is clocked a whisker. I’ll run the bit down through the oil passage to true up the holes and de-burr accordingly.
Also, I am in search of the tool that is used for drilling a small hole in the galley tube in each lifter bore. I have heard that Chrysler sold this at one time but I’ll be damned if I can find it. If anyone knows where to get one let me know before I commence to making something. I had originally planned to run a SFT lifter but I’m beginning to lean towards a solid roller. Either way I think a small (.030”ish) hole in each lifter bore would be beneficial, especially in a street car such as this.

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