76' Viper (Ovation solid body) value, or sound?

This guitar is kind of rare. Smooth playing. Great looking. (very heavy) But it came with 2 single coil pick-ups that hum really bad. I want to convert it over to humbuckers, but don't want to hurt the value of the guitar. Is it worth destroying the value for sound, or should I keep using it as a decoration, and play my other guitars?