Mk1 Escort Rack end lock nuts

Hi all,
 
I am chasing some Mk1 Escort rack end lock nuts.
 
I have purchased a quick rack (just the rack and the pinion) from Gartrac in the UK and it turns out the thread on the end of the rack is to suit a MK1 escort rather than a Mk2. I have successfully tracked down all of the required bits and pieces with the exception of the lock nuts for the rack end.
 
Thanks,
 
Damion