So I'm was curious who has installed the Nismo clutch line while still running a strong factory clutch assemly and flywheel. Just curious if your pedal feel got better or engagement was easier to predict.

Feels the same to me. I only installed it because I was turbo before and didn't want to cook my OEM clutch line.

I can't speak for the 03-04s, but the Nismo clutch line looks and feels exactly like the stock one I took off my car...