Best Coilover IFS for '71 duster?

That comment was in no way aimed in your direction but rather at those in general
who ceaselessly expound on the superiority of torsion bar suspensions at the slightest
suggestion that one may be considering undertaking a coil over conversion.

You have commited no such trespass and in fact I am enjoing reading about your innovation.

I agree completely. I've never been able to understand the seemingly prevalent concept that
"what I have is absolutely the last word, and everybody should do/have what I did or have".
If I was building a drag car or any type of race car I would very likely have some sort of coil over deal in it. But I drive a muscle car because that's what I grew up in, and it's a nostalgia thing I suppose. All I know is I really enjoy the car. I wanted a GTS like I had 100 years ago when I was a youngster. Except I also wanted a modern hemi, 5 speed etc. etc. BUT, to me the most important thing was that it retain that "feel". It wouldn't mean anything to someone born in the last 30 years or so because they never had that "connection". I can fully appreciate the advantages of the coil over type suspension and I really enjoy the innovative engineering that a guy like Denny has put into his product; it truly is great. But at the same time I love the torsion bar/leaf spring setup for it's old time feel and simplicity. There's plenty of room for both.