Passat 2-door model (Coupé) of about 1978 it was I believe; one of the the very first models anyway. You'd want the REAR springs of them for you 03 front struts
Those can easily be used in a stock strut and lower about 4 cm and be 25% stiffer than stock.
I have however also used Golf 1 struts and lowered the bottom 1303-perches some as well. I think its about 10 cm lower now, but because of the large diameter wheels it doesn't look that low.