I am thinking about starting a upgrade gun, most likely will be a Fox Sterlingworth. This will not be done to make it look like a higher grade Fox, rather a custom stock and non factory type engraving. I was wondering, after seeing and being inspired by quite a few very well "upgraded" guns on this site, what criteria do YOU use when selecting the right gun to upgrade. Barrel condition, blueing, top lever position, buggered or non buggered screws? Which criteria are more important and why? Clearly you want to get the best example of whatever model you are after, but upgrading a near mint field grade is not the best use, IMO.
Thanks,
Tom