Right now I'm using 4 pots on 300mm at the fronts. This was a kit made by ART for DC5 and DC2s. my stock DC2R brakes had ZERO problems in stopping my car, mainly due to my car not really seeing anything higher than 160-170. And after I had these 4 pots put in, which ART rate the build quality and performance better than the rx7's tested. I'm an amateur at driving, but the amount of self induced over steering happens really easily, on straights too.

The stopping power I get is awesome, but it really is overwhelming, I'm in the process of getting a gurney and brake biasing valve to deal with this problem. And sadly, I'm not even using ART's way more aggressive custom pads for it.

My knowledge is balls compared to you guys. But for me straight up it's like this, when do you need 4 pots? When your car is over a certain weight e.g 1200kg, gets up to 170km/h, you slam the brakes, and you're getting really shit clamp on your current brakes. So we 4 pot that sh*t.

So if you are really pushing it that much and need that much more clamping power than yea. But just saying, it doesn't feel good straight away, just making sure you know that what you're getting is very overpowering, hence why lot of the guys here are recommending much more reasonable options. That are meant to be enough for your usage.