Distance between bath tap holes?

I prefer no taps and the bath filled by scantily clad maidens from pitchers carried on their shoulders! As for the actual washing process.....

 

Traditional or modern style?

Certainly 'cranked' legs are available on a number of traditional (Victorian) style mixers, and these will cope with all sorts of spacings.

Are you looking instead for taps with a wider collar to cover the existing holes should you elongate them?

Plastic or cast bath?