I bought an original apollo volatge converter off ebay.
I got a reply from AmigaCenter:
Hello,
You also must got the Eprom or its file. I do not know how it could work without it, perhaps well, perhaps not.
After you just have to replace cpus and put jumpers in correct way ( clock, 040/060 ) and plug the 3.3 V small pcb.
I never do this job, so i cannot tell a price.
I think you can do by yourself.
Kind regards,
JJ B
I can easily pay someone to desolder and solder the cpu. The volatage regulator simply plugs in to the board. The only problem now is the eprom/file. Which looks extremely hard to find. Oh well