Well i have a b16 swapped in a 99 4 door sedan and will be using the jdm type r header with a omni power test pipe that wil fit a 2 1/4 cat back exhaust, I really like the world sport system, if i order a system for a 99 dx that specifies a d16y8 engine with this system fit? Not sure if i should order the 116-kh01 this is the one that is made for a ex si? or the 116-kh05 the dx one.

 

you need the system for an ex sedan.