The ornamental design for a guitarbody, as shown and described.
FIG. 1 is a front perspective view of a guitar body showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a front elevational view of the guitar body having a cover and other guitar components.
The broken lines showing portions of the guitar body are included for the purpose of illustrating environmental structure and form no part of the claimed design.