I'm at work so I can't get accurate measurements for you at the moment. Here's what I found for L-W-H for one that is assembled:
Length 191.3 in (4,860 mm)
Width 76.1 in (1,930 mm)
Height 50.9 in (1,290 mm)
I'd think the width wouldn't change due to the rear quarters. Length would obviously be shorter because of the fender overhang (- ~9" ?) and height would be shorter if we're talking a non-rolling shell (- ~12" ?)
I'll take measurements of my car this evening if someone doesn't chime in with some numbers.