Took me just under 5 hours and thats because i also changed my shifter to a short shifter. If you can change your oil, you can make this upgrade. I still have the regular glass and the image looks great at night. i will see how it looks tomorow. Had to take out alot of screws but the instructions were really easy. Here are some pics. It gets real ugly when you have to actually dismantle the dash of a new Vette to get this, but in the end it was all worth it.
I highly Recomend this Kit sold by Dennis. He is very Knowledgable with the kit he has produced and it trully can not get any easier than this.