If you are talking specifically about the stock 240sx brakes, then I will have to disagree. Stock brakes on 240’s are garbage even with good pads and rotors. I actually got brand new pads and rotors when I bought the car and they still were pretty scary on the highway… all I had to do is brake hard couple of times and the brakes would have been almost gone… not to mention that most people have rusted calipers which are seized half the time on pretty much any 240.
Point is, upgrade those calipers on the 240. Don’t be cheap and just buy pads and rotors. Cheapest (by far) are the z32 front brakes with conversion lines. Pads for these are cheap and so are the rotors. There’s no reason why people shouldn’t buy them. I mean, they spend god knows how much getting rebuilt calipers, new pads, new rotors and so on… if you add another couple of hundred you can have much better brakes.
Keep in mind, those front z32 calipers came stock on S14 (K’s) Silvias. Just that alone should be convincing enough.