Thanks, forgot about Bike Fab supply. I ordered the C66 dropouts, hopefully they are tall enough. Otherwise I'll have to bend some stays
https://www.bikefabsupply.com/rear-d...-x-142-m12x-15

Thanks for the pictures of your stays. Not sure why columbus doesn't have a scale drawing of these. Doesn't matter for a lot of tubes/stays, but in this case it's important.