DOES ANYONE HAVE THE DEFINITIVE ANSWER RE ULTRA-QUICK STEERING RACKS

I HAVE DRIVEN ONE TYPE R THAT APPEARED TO HAVE A FAR QUICKER RACK THAN I HAVE TRIED BEFORE (INCLUDING P1) OR DID I IMAGINE IT

I ALSO HEAR THAT A CERTAIN PART OF THE IDENTIFICATION / CHASSIS CODE CARRIES AN IDENTIFICATION OF THIS RATHER NICE OPTION - ANYONE ANY IDEA WHAT IT IS?

RGDS
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