The only thing that you have to make for power steering are the hoses. Breeze has all you need for those. No modifications to the car. Power brakes are another thing. I went with the Whitby booster and have no regrets. You will have to make modifications but taken one at a time it is not as bad as you first think. At first it can be a little overwhelming. It will never cost less and be easier than it is if you install while you're building. I have power steering and brakes in my MK4 and would not want to have added those after the build. Price is another issue, neither are cheap but not many things are in these cars.