2 litres?
I did my front bumper my self and use only 300mls, and thats with three coats of paint.
Of crse you mix in thinners etc into the mix.
However if you get someone to eye match it, there is a mim buy of i think 500mls.
I bought a litre as i want to do my side skirts and pods.
Dont forget the clear coat as well.