Overall I was very happy with the kit. The day after I installed the heater crossover pipe I came out to the garage to find a small coolant leak under the car. I tracked it down to the temperature sensor on the crossover pipe. I called Christian and after a great conversation, I removed the pipe and removed the sensor. I added coolant safe RTV to the O-ring. I waited 2 days before reinstalling the pipe. As I installed the rest of the kit, I used a small amount of RTV on all O-ring. Pay special attention to installing the O-ring in the water pump by-pass port. If this O-ring is not seated properly, you will have a leak. I have driven a little over 700 miles and the cooling system in tight and leak free. I would highly recommend this kit to anyone willing to perform work on their own F-Type. Make sure you also have a torque wrench that will measure 25NM. The bolts in the supercharger are soft and can break if over torqued. Also make sure you order the Oil Cooler O-Ring | AJ811539 since the kit does not include this O-ring. Thanks Christian for all your help and insight.