Steering Box Ratio

Dave999 said

OK variable rate racks and solutions for steering

AutoZine Technical School
https://www.brakeandfrontend.com/variable-ratio-steering-systems/

i belive the cars that GM Holden sold in the US under the chevy and pontiac brands, rear wheel drive v8 saloons had this, can't find anything to show that. but the above illustrates some of the history. You can get a modified K frame in Australia to facilitate fitment to a Mopar

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Kirby-Bishop made variable ratio steering boxes & racks for Fords & Holden's in Australia and later for Mercedes and a few others aswell.
I have one of their variable ratio power steering boxes to go in my valiant - 2.5 turns lock to lock, 17.5 - 11.5 ratio. I couldn't find much info on them but apparently "the variable ratio is provided by a variable pitch hourglass worm". The variable ratio rack they made for Mercedes is a similar design to the Honda rack posted above.