There is so little info on the 03-04 springs I can't honestly be sure. Here are some resources I found:
CB-Racing, 986 Suspension Info
m030 spring rates
ROW M030 shocks and alternatives
One option might be to call someplace like suncoast and ask for the part numbers for an 03 S manual and see what they give you and we can compare to what I have. I plan to take some pictures tonight and post them including the color codes/part numbers where possible.