Part hunting for timing chain job

At this point, virtually all timing sets except Roll-Master use a cheap cast iron cam sprocket with three very thin spokes. I've heard reports these can fail at high (4000+) RPM. I'm not even sure you can get the nylon sprocket ones anymore unless you find old stock sitting around. I would opt for the Roll-Master for peace of mind. Sure, it's about 3 times what other brands cost, but it's still reasonably priced. And yes, I ran into the issue with a too-tight crank sproket myself; just had to keep sanding it with fine-grit sandpaper until it fit.