In the interim, u could try making a 3 pronged removal tool, by flattening 3 pieces of welding rod, then twisting the three together into a cone shape. Thus creating a spring-loaded action, to lock the 3 prongs under the lifter edge?   Dunno if it'd work, just a random brainstorm idea I had.  

Ebay, Amazon, local toolshop, Bunnings possibly also? Mine are just cheap ones from some discount hardware shop yrs ago.

Where can I buy a pair?

It was challenging to get my lifters out, even with the tool, and rotating them as I applied upwards pressure.   I also needed to use extended reach long-nose pliers with a circle shape on the end, to help tighten/loosen the tool into the lifters. (lightly firm, not too tight or u can fracture/break the cast metal lifter body)   Plus a stick magnet to fish each lifter out of the chasm, once pulled out of their lifter bores.    

I just drilled a hole out, on the bottom slightly ontop of the other one and to the left.   Worked fine      

Well Ive tried pulling the lifters out with a magnet and a flattened welding rod and nothing has worked they move freely until the end where they feel like they hit a wall. Ive ordered a lifter pull tool but that wont be here till Friday. If you have any other tips on how to get them out then let me know

I don't remember. Possibly one but I basically put the new one in the correct spot and sent it. It was likely a need to drive it to work the next day after the original cable kinked and I wasn't buying another if I already had one that could work 

@SPArKy_Dave - yes that’s what I was thinking too. @Thom @deankxf did you use any of the existing Mounting bolts?   I was thinking if redrilling or drilling a bigger whole on the pedal.

There must be a slight difference, between the early XF mounting points, and the later XF commercials, which ran an e-series accelerator pedal?

Yeah I did as Thom did and used tek screws.  Nut sert or riv nuts would be preferable if you can get access to them