<----- is lucky, don't have the Bose system to deal with. The speakers in the doors have some pretty damn good midbass, don't know if a previous owner swapped them out. don't care. It did have the factory radio in it, so more than likely it's all stock.
IF I ever get a bug up my ass (or if I blow an existing speaker), I've got two pairs of Pioneer 6 1/2's in my old Suburban, and have 3 pairs of Lanzar 6 1/2's in my basement, still in boxes from 5 years ago (was going to upgrade everything in my Tahoe, blah,blah....).