Rendered with the default renderer, no plugins added. 9947 faces when smoothing/NURBS is turned off. Geometry is clean (no loose vertices or edges, no n-gons).
Model is already UV mapped, so adding materials with patterns /rendering lightmaps should be a breeze.
Guitar.obj contains actual model, split
Guitar.blend contains unsplit model, in a ready-to-render scene.
Guitar2.blend contains same model as guitar.obj, but with subdivision applied, and empty materials applied to each part of the guitar.