Finally got the Sierra steering bits fitted with the Escort Mk2 rack.
The way I did it was to turn a three piece nylon bush that encased the Sieera steering bearing and this was fitted to the chassis steering tube at the steering wheel boss end and secured in place with the steering boss. I the fitted the upper tube and adjusted the triangle tubing thingie in place and drilled right through and fitted a bolt and nut that locks it firmly in place so it cannot slide.
Then turned a steel bush in the lathe that fits snugly over the triangle thingie and tightly in the swivel bulkhead bearing and welded in place on the triangle tube.
The lower steering rod with the swivel connector and rubber conector was split and lenghend to size with steel tube and welded fast. The whole contraption was fitted and the bulkhead bearing grub screws locked onto the welded on steel bush over the triangle thingie. Steeing nice and secure with no play at all.
The offset at the steering rack is so little one can barely notice it on the rubber coupling when turning the wheel. Steering clears the engine bay and also the mountings by a good margin.