I had one of them in my bay when I worked for T&T fabrications at Lenwade some 10 years ago............ I have not seen one since.
If I recall correctly it is a 30amp machine, so it may be possible to up grade to a PT31 torch............... see attached PDF file below.
The top right hand corner should house a blanked prewired two pin socket so that a switched torch unit can be used in place of the constant live torch.
T&T up graded the one I used after a forklift dropped some steel on the torch lead (whilst I was using it). They up graded using the cut 40 torch with pink shroud and silly cable tied in position trigger switch but the sparkytrician changed the two pin socket (on the machine) and plug (on the lead) to aviation ones as shown below.
aviation plugs & sockets 2.jpg
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Plasma Cutter Torch Type PT31 Spare Parts List 1..pdf