Parts are what they are - more likely to be unavailable than to have upgraded alternatives. Be creative in using parts designed for other purposes.
Wall construction is best described as hap-hazard. They put internal supports where needed, e.g. to frame a window or mount something. Not regular "studs" as in residential construction, nor is it unusual for it to be partial length or simply a backer to spread load a bit where a cabinet is hung. You will have to explore carefully by sound, or maybe a stud finder will work (depending on the materials in use). May have to resort to drilling a tiny hole to verify what (if anything) is there. first question is whether your Bullet is wood or metal frame. Since it is filon-paneled exterior, chances are it is a metal frame.