I guess, there is no such tutorial available. As i told two years ago, i never tuned those 68020 module sets. But it should be quite a simple job. Just remove the cover from the keyboard module and locate the crystal. Then replace it by a faster one. But don't exceed 24,576 MHz, as your module set won't work at higher frequencies. The crystal's replacement is easy to do, if you are familar with solder pens.

After tuning the module set, your display module will not work any longer. The only workaround is to replace the display too, but till now i don't know where to get "faster" displays. As long as you can't replace the display too, it is simply nonsense to dream on 24 MHz for your module set. You may try a crystal of 18,432 MHz - maybe your original display will accept this frequency, but i can't promise. In this case your module set ist exactly 50% faster than before. Not really much, but you will already note a slight increment of playing strength.

That's all for this evening - i have to proceed with my job...

Kind regards, Wilfried

BTW: If you want to use my forum nick instead of my name, please make sure to use it in a correct way: EberlW and not Eber