Build/Buy/Rent those are the options as far as I can tell. There is no clear path, each option has upside, and downside. This post is part of a series, here is part2. I think I am going to do a combo, I am going to rent first to make sure I understand what the car is going to feel like, and then go into a build using my CaymanR as the donor. I did research, and found Bilt Racing Services. They do exactly what I need and can help me develop the car over time which, is how I am going to approach the build. My plan for next year 2018 is to rent a GTB1 CaymanR from Isringhausen for a couple weekends, then go down the path of reliability (upgraded cooling), big brakes, aero, suspension, wheels/tires. I will develop the car all the way to point where the only thing left would be weight saving, and a full cage. Once I get an idea of what it takes to get used to driving the car with this setup, and learning how to change the setup. I will then take the car the rest of the way.