How can I tell if I have the heavy duty brake option or not on my 13 PIU?

[TheeJoshB]

As the title suggests, went to buy front and rear pads through rockauto and it came up with the 2 different options. With heavy duty brakes or without heavy duty brakes. The pads dont look different in the photos but I'd hate to order the wrong set. Is there a definitive way to tell?

 

[blwnsmoke]

All PIUs have them.

 

[KayGee]

I believe there were fwd variants of the early models available that may be LD or HD brakes. I believe AWD are all HD.