Regarding the Willys Aero...I didn't know what 'unit-body' meant, so got to looking. Stumbled on this scan of a 1954 Popular Science . They even mention the Willys Aero model. Kinda cool! My '70 Firebird has the 'subframe' up front...so even 15yrs later they couldn't shake the whole 'frame' idea. Is that because the V8 is so heavy? Seems cars now-a-days have this down, though.