Thanks everyone for your help. I can now see that my mount is NOT an EQ1 or EQ2 clone - it has projecting RA shafts onto which a drive could be mounted, but doesn't have a gear to suit an EQ2 drive, and it doesn't have a standard mounting point to take either of the standard drive units.
I'm sure I could bodgy something up to install an EQ1 drive, but there is a chance the drive speed could be all wrong as well. I don't want to spend $100 or more as an experiment, but I might grab a cheaper second-hand one if I see one on eBay or Gumtree. I might also see if I can build something from scratch using a stepper motor and an Arduino to control it.
Anyway - the telescope itself is working fine!
Thanks again!
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