There is some interchange issues as some of the tone rings are 4 bolt and some only 3 bolt. Pretty sure the non-VVT 5.7 is 3 bolt and the 6.1 is 4 bolt, but not sure on the vvt 5.7 or 6.4. I remember looking at something tone ring related awhile ago and not being able to find a tone ring that would potentially fit what I as doing. But it has been long enough I don't know what I was even researching anymore.
I don't think I will ever need a fully forged 5.7. I could see myself spend money on it and then want more displacement and throw it all away, too.
At the same time, I could see building a fully forged 5.7 with a set of Trickflow heads that are dual drilled and a HC FEAD kit. Run it NA for awhile and then swap an HC blower on it later. Probably make 85% the power of an HC, but cost much less.
I currently have 2 vvt 5.7's, so not impossible that I might build one up at a later date. But the first one will be a bottom dollar re-ring unless the cylinder rust doesn't hone out.