Originally Posted by OptionZero

Seems like the issue isn't fitment, its the front bumper choice. The thread starter choose not to use the AIMGAIN front bumper - that is why there is a gap.

If you look at dom_zee's car (the baby blue AIMGAIN z34), you'll see what the front flare extends that far - its to match the length and slope of their front bumper

If you want to use that OEM front bumper with those flares, take it to a shop and have them chop off that forward section and custom a new attachment that matches the lines