so i ordered skunk2 valvesprings for my d16z6 and when i got them i noticed there wasnt any difference between them. i hear things like the intake and exhaust ones have paint marks of different colors on them, but mine dont. also - they arent progressively wound like stock, so does it matter which side contacts the retainer and which one is on the seat, or are they all interchangeable? someone help im not sure and i gotta get these in soon...

 

anyone???