Good luck with that!
I used to scour the Internet trying to find free scores for CG, but most of the stuff out there was subpar quality. But I also came to realize that I wanted quality pieces to play so I began to seek out composers that wrote/arranged for the CG and paid them for high quality arrangements. After all, I would be playing these pieces for years and the small amount I paid would support the composers and keep people writing for the guitar.
Good luck on your search!