I plan to do my cooling syetm tnight, and i am not sure which seals I need. I see 2 different o-rings, and 1 of them says EXCEPT INTERCOOLER. So im guessing that since i dont have an IC than i need that number seal? Are they different?

its my daily driver and i cant have her down so i need everything before starting. This o-ring is it the thick rubber with like a step on one end?

Thanks