Any good sites to find GOOD quality 3D geometry?

I have built a 2'x4' CNC router and looking for a good project to sink my teeth into. Always wanted to build a guitar and looking for a good, complex form to start with as my organic CAD skills are not up to snuff. Trying to find on here but only came across Fabitrabbit which list a LesPaul style.

Can't seem to see anything good on 3DContent Central ....any more suggestions would be helpful please.

-SZID