Nope, Raptor blocks are completely rectangular in shape. The pads on the axle may be welded differently though since they use a different axle than regular F-150's. Not saying that's what it is, but would make sense that the correction is done on the spring perch versus using an angle block.
I installed the pro comp 3 inch blocks and ended up with the driveline shutter/vibration between 20 to 40 km/hr (12-24 mph). The instructions were not very clear as I could not locate the arrows that were referenced and I ended up putting them in the wrong way. I didn't notice the first time that the blocks are tapered. Changed them around and vibration is gone. Im pretty stoked I don't have to take it in to suspension shop.