I'm with XA coupe, there are other things you can do to make it look low. Skirts and deep spoilers together with big wheels will make it look like a hovercraft if done right, you just need to look at the ricers to see this, or an old XY Falcon with and without the GT bib spoiler at the front. Especially if its only the look you are after. A car that is too low is a nasty thing, not only is it really annoying for scrapes and damage, but it will do HORRID things to handling if it is too low/hard and has not got enough travel in the suspension.
Thought it was time to try a turbo for a change :)