We had looked into the manufacture of an upgrade cast cam for the CR, before the DieselGate fiasco. Our decision was with so many vehicles around, and years of the problem 'cam rings', it would be a good replacement. But with so many to be crushed and no continued run, we nixed it until the dust settled. I think it has not only settled, but there are other, bigger issues.
Probably the single factor that stops us, is not the cam itself, but the rest of the components, which cannot handle the pressure or lift. There is also a geometry issue that we felt caused a limit for height, mostly because the rockers themselves were too weak. The only thing causing the valves to rotate is a small and weak contact on the rocker. The rocker is an inherently weak design, without a good way to bolster it.
We got more confirmation when we received a cylinder head by way of one of the 'aggressive builders' on the Club, a CBEA head, that was sent to a customer of ours. It was claimed to have only 6,000 km on it. Every valve on the exhaust side had stopped rotating and had a hammered flat spot on the valve stem, every rocker was flattened, and every roller was not turning, because of the flattened needles inside the roller. I don't know what horsepower was intended, but I believe it might have been an attempt above 250hp.
At that point, our interest in developing power for the CR faded completely away.
My though is you would have knocked the rockers off of the exhaust side cam.