Jim,
Heated them to a dull glow, not enough for gravity to take hold.... While glowing I used a 5' long pipe and slowly pulled it over. I used a straight piece of flat alloy to see where the hole for the tie-rod end lined up. Used the old units as a template from the bottom as well. Like anything Cobra it's a plus or minus 1/16".
I'll try to add pics to demonstrate what I am saying. Spoke to a few folks about quenching and was told let it slowly cool. That is what I did.
Easy peezy!