No I believe recommended ride height.
My 02 car presently on stock suspension rides 20mm higher than those stated.
However if you have a 03 onwards 4200 if will be slighter lower than mine, and if a GS, it might ride the same as those stated being set lower still from the factory.
I notice you state yours is an 02-03, does it have the rear wing aerial (02) or no aerial (03), as from the factory they both had different springs with skyhook and different ride heights.
Anyway....looking at mine which is riding too high, dropping 20mm to the FD measurements sounds about right without being silly.
What is the height of yours at the moment?