I've read the poor man's BBK setup and tried doing the same. I fit the rears fine, not the fronts. Here is the source: http://www.nissanclub.com/forums/2007-2 ... iy-11.html
I ordered the Power Stop calipers since they come in already painted red. S2870A. Why? Well it mentions in the source that they would fit so that's what I did. Well, to my luck they don't fit. Yay. So I go on the FB page and find out that someone else actually ordered the same part and got them to fit. WTF? His is a 2010 Nissan Altima SR. Let's look at this.
The guy ordered the same part:

The guy fits in just fine:

I try to fit it in:

Maybe I ordered the wrong part number? Nope. I ordered S2870A from two different place. One from same place as him and another from somewhere else. Neither fits. Then I found this link: brakemotive-powder-coated-calipers-t596347.html which indicates that S2870B is the one that actually fits in. Who sells that part? Almost no body. Except one website without even a price, I have to call.
Now while I go pull my hair out, I hope someone out there has some info for me.
