A similiar discussion concerning body alignment is also in this current thread:
http://www.clubcobra.com/forums/show...758#post690758
Oh dear, even Kirkhams and Shelbys are 'off' a little.
Solution? Use your tape measure sparingly, you might not like what you find.
Line that rear end up and follow G.R.'s excellent advice, "Breathe in... breathe out..... etc."