Wilwood 11.75 rotors
 

After turning the top thermal paint on my set of basic straight vane 11.75 wilwood rotors on my TSE kit, I'm looking to replace them with a set of directional vane items. (I want the APs, but they're not sold in Europe)

I've seen a lot of people run the HD36 11.75 wilwoods (160-12283/4) but I haven't seen any references to the GT36 11.75s (160-12285/6), is there any reason for this? (I'd like the GT36 slots for the pad compound I run, Ferodo DS1.11)