that's a fine leader you've posted there. The millenium is possibly the most uniquely constructed model Heritage builds, designed by the Bill Duerloo, the same guy that led the way on the SG and designed and brought to market the Guild S-100. The "Millie" consists of a milled solid mahogany frame which incorporates the perimeter of the body, and from the heel, a solid extension up the center only so far as to support the bridge. The p'ups are mounted on the solid bookmatched top into a single hollow cavity that extends throughout the bouts of the guitar. A solid top and back are added to this frame, and a long tenon set neck. I don't know of another guitar that does it quite this way.