Import guitars have made it economical for almost everyone to own a new guitar and many sound really good. In the photo, the old tuners did not have a direct fit, but the customer was willing to forgo cosmetics for a better tuning experience...
After filling the old mounting holes and cleaning up, the impression footprint of the old tuners is still visible around the new tuners. After drilling the new mounting holes and installing the tuners, the cosmetic sacrifice was well worth having creamy smooth tuners...
Some tuners require a stepped hole for the tuning key sleeve to fit in the back of the headstock. Using a tuning key reamer, I was able to fit the tuners to this headstock...
With the holes cut and the tuners mounted, the 16:1 ratio gives a nice feel with good tuning accuracy. Note the tuner hole reamer from Stewart-McDonald ...