XK 140 FHC RHD Steerin column Bulkhead Hole Location

Hi ,
New to the forum… couple of Qs on converting my LHD XK 140 FHC to RHD.
Meet Big Jim through his utube channel and he sent me some useful info but got other slightly different measurements .
I need to find the positioning measurements on where to drill the steering column bulkhead hole and also the dimensions of the bolt through bracket that attaches to the column by the bulkhead.
I’m building the car as a racer so will fit a pedal box

Thanks for any help

Graham