I think that would include drilling the 1/3/5 holes deeper and installing Heli-coils so they use longer studs like the 2/4 have. This approach makes the most sense to me, too.

EDIT: I see Hughes says they use .75" inserts when they do this mod, but mine have slightly longer .9(+?) inserts which I special-ordered from an online tool supplier (McMaster-Carr, maybe?).

Also, I ordered longer ARP studs directly from ARP since the size I wanted weren't listed on any typical car parts vendor's web sites. IIRC, the "long" studs are usually 2.75" and I ordered either 3.0" or 3.25"... can't recall exactly at the moment.

Regardless, figured I'd mention parts you may want or need if you follow through on milling off the original rocker pedestals.