I don't see there being a manual rack for the XJS or XJ6 IFS you would need to modify your own I used the steering column from the XJS I just tilted the rack to make it fit and extended the shaft.
The steering type would depend on the engine size cast iron V8's are not light weight and it would be needed with the V12 for sure.

cheers

1940 Chevrolet 3/4-Ton
"Project XJ-PU-V12"
In the Stovebolt Gallery
More pix on Flickr

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