I have done the conversion to my Camaro. The best solution is to remove the entire front bumper which you will have to do anyway if it is a OEM Z28 front splitter. You will have to use metal clips that are retainers for the Z28 front splitter. If it is an aftermarket Z28 style then they may have used the same locations.
Also if you add the OEM Z28 splitter you will need the Z28 flares, it is designed to add the flares which interlock.
It is a lot of effort to remove the front splitter.
