I was the first to put this upgrade in both of my trucks inside of the heater box so it looks clean. It makes an amazing difference in how fast the cab heats up and how much more output it has over the stock heater. The big bonus is that it's made from an engineering resin, so it can't ground fault like the stock heaters do. If you want me to do the work, you will be getting a solid piece of hardware back. The heater is an additional purchase.