You're losing surface aread with slotted too, hence why I would go with a plain-jane OEM 12" impala rotor.

Actually with the slotted the loss of surface area is negligable. Why you ask? Because when you brake gases are formed from the rotor and pad. Repeated heavy breaking the gas builds up between the pad and rotor making the brakes less and less effective (brake fade) the slots give the gas a way to escape. Ensuring pad/rotor engagement every brake application.

thanks for the info

Yep.
Installing drilled or slotted or both will not decrease your braking ability, it'll increase it.

N case want take the Whip to autocross!
Pics to come when get the brakes in!!!!

That was true for old brake pads/rotors, I don't think it is so much any more. The newer technology used doesn't release nearly the gas like the old did.

There is no way drill/slot is going to improve your stopping distance. If anything it will hurt it. Assuming the slots are useful for releasing gases nowadays, you're still only going to see a benefit for repeat braking (going down a mountain would be one area where I could see a benefit to slots).

So it depends on your driving and what you want aesthetically. If you live on/near a mountain, autocross, or just want it for the looks, go drilled/slotted/both. Otherwise you'll get better results without.

But still a D/S 12" is going to outperform a smooth 11".

probably. what's your point? OEM impala rotors are available in 12"...

My point is you can both improve the looks AND improve the braking at the same time.

That's what I'm doing!!! ^

I received the calipers, brackets, parts, and pads today. Rotors weren't in box and I was a little nervous.
On grandprixforums thread ZZP bashed this guy.
Alex just bought a ewp from him, so I was like ok I'll try him out.
I have emails of the transaction and paypal, so it seems legit.
I emailed him right away find out about rotors, and he emailed quickly back said they are in another box shipped.
So hopefully they come tomorrow.
I got slotted rotors 12" with the hat painted black.
These things are 5lbs lighter per caliper than stock, and sweet!
I paid $4.00 to have them painted red, but I don't like the red. I am going coat over them with the red I've been using for the other items on the car.

Next purchase, SS brake lines, and eventually rear pads and slotted rotors.

Look good! So you pay them for paint it as red right? I don't want my silver car with red calipers.

I paid $4.00 have them painted.

My bad. I just saw last part of your message. I plan edit it out after reading them but you already post it. Why you don't like it? Too bright? At least they are cheap to paint.

No, too dark actually
Plus won't match rear caliper paint.