With it having an embedded bill validator, that's going to be a PE+, not a PE. (A lack of a bill validator can still be a PE+, but there were no PE (non-plus) machines with validators.)
I have a bartop PE+, but mine does not have the embedded bill validator, and as such I don't know that the tray is the same -- my tray is mounted vertically along the left edge of the cabinet, not horizontally.
Attached is a picture that a member on the old site posted of their PE+ MPU board from a slant top (sit-down, but not bartop) machine. You're likely looking for something similar, if not exactly this.