Did I miss something?
You STILL require the SKREEM, a transponder chip, and the halo antenna.
What the above mod does is replace the physical key in the ignition with a push button, and individual ignition and accessories switches.
You STILL need the fob to lock/unlock the doors and to activate the SKREEM with the transponder chip.
Also, you STILL need the physical key to unlock the driver door if the fob, SKREEM and/or auto battery fails.

All that said, the above is a nice push-to-start conversion if that is what is wanted, but it does not get rid of the SKREEM nor the security system.

No horn tooting or calling anyone dumb....
Cheers,