hi all can anyone tell me what lbs front springs i will need? car came with gaz 1.9 275lbs springs to soft for saab turbo, my zx9 mk had 320lbs so thinking 450lbs any ideas.

my mk indy r came with 280 or 300 lb springs and i changed them to 175 i think with a gsxr1000 i would have said that would be ok but its personal preferance
i like my car soft ish on front so i have a bit more feel