Well, if anything the AP pads and Callipers will be ok but if any worries just buy the Callipers from them and source your own disks

But if you think that they use the same company for the Reyland Cosworth's brakes I wouldn't have any bother as the Reyland has got stupid power so the brakes must be up for taking some stick.
Or from looking at the price list, you could get the Brembo 6 pots and disks less than most CHEAP 4 pot setup's.