You sometimes get pad knock off on some kits but its definitely not the norm. I have never driven a Skyline without the booster so cant comment on that but the Catherham, friends App J Historic Touring car all felt great without a master. But they are light cars with little tyres, ;little horsepower with little in the way of braking capacity. Be interested to see how a Skyline feels in contrast, if it feels the same then great....at the end of the day if its a Targa car with ABS I say dont stress there are other things more important to mess with like suspension to get the car to stop