This kit is custom made(by Custom install parts) to fit better like the factory kit (with factory OEM finish around radio opening) . You can see the difference by the edging around the radio opening and the stronger better brackets (they also look different then Metra's)This dash kit is designed to convert your factory radio opening to the size of today's Double Din aftermarket radios. The dash kit is made specifically for your vehicle, it lines up with factory mounting to install and uninstall easily. There are no modifications necessary. The harness will save you time and aggravation. To use it simply unplug your factory radio from the harness in the dash. On the aftermarket radio wire this in by matching up the colors. Our harness meets EIA color codes to take out the guess work. Then simply plug the aftermarket radio back in to the factory plug in the vehicle. No cut wires, if you sell your vehicle simply unplug the aftermarket radio and replug in the factory radio. The antenna adapter is used to adapt the factory antenna end to the standard Motorola male end need to plug in to your new aftermarket radio.This plug may not work if you have installed an aftermarket antenna, as most of those do not require adaptation.There are no modifications necessary.