body style differences???

[the shadow]

with out posting in the various mfr related sections I want to ask a general question about 3 cobra body styles and see what you guys say and see if it makes sense with what my eyes see?

when I look at a backdraft or a superformance or a factory five I think I see body differences, maybe not major but I wanted to know if there actually were modifications done to each brand to make them there own.
For instance the backdraft cobra body looks wider & lower to me in the rear and the flares on the fenders look wider & bigger to me?

thanks,
Paul