I am in the middle stages of replacing a timing chain. I have pulled the head, and my intake and exhaust valves are pretty crudded up. My mechanic friends have recommended replacement. Does anyone know where I can get a kit or set to replace everything that won't break the bank? I also need to get the head machined. So, I was wondering if anyone knows if I could find a new head with the valves preassembled, and if so how much?

The other thing I'm wondering about is a good way to clean out the intake manifold, throttle body, and everything in between. The whole assembly is just caked with crudd. Any suggestions?