I love the retroarcade.co.uk tracks! They do not have holes drilled because they had no idea where my holes were on my machine, and that’s fine. They sent me the stainless steel cotter pins they use though. I got 94 cms track for £16 and a 44 cm one for £12. They are 20 mm wide with a 14mm groove in the center. It feels super high quality and has a great balance of rotational flex and lateral stability.
I did contact Retro Arcade who kindly supplied me with the full trigger assembly. I have to say an extremely pleasant man.