1976 Harley Davidson Liberty Ed.Superglide, over the years the tank decals have faded. Any idea of how2replace

The decals are on the tank and are pretty much the centerpiece of the bike. 30 years of sun exposure and gasoline have faded the once bright colors. Any ideas of where i could get new decals or even replications would be greatly appreciated...throughout the years i have only seen one set, that i missed on ebay.