Anyone use a steering quickener?

I'll try to clarify what I said about possibly being "squirrelly". Just remember, this was a guy I met a few times and NOT firsthand experience. I only mentioned it because he was an honest, well-respected guy in my area...
His Duster was running the 340 manifolds, and he said he got the longer pitman and idler to clear everything by having differently routed headpipes welded up, and I believe he used oval tubing. When he got it on the road, he claimed that the A's light nose weight (?) made the handling feel too "twitchy", and not very smooth when turning, no matter how he had his alignment set... I had suggested he either find a different alignment shop or reduce his pump pressure. Don't know if he ever got it sorted out, haven't seen him in close to 20 years. I only mentioned it because it was the only reference I had to on-road use in an A body.
The one guy I did work with that tried them decided he didn't want to deal with the issues and went back to stock parts.
This is just for what it's worth, and your results may vary.