I don't know the weight, nor have I even seen them. The garage that is building the car is about 300Km from here and haven't had the time to check it on site. But I'm pretty sure the calipers are light. The surface of the pads is limited by the FIA file of "back then" and in historic racing, you have to stick to those things. If you put in modern calipers, it's like putting in electronic fuel injection, works better but shouldn't be on that car.
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