/6 225 build up.

I'm looking for the best thread or ideas on the best /6 build up. I'm looking at an intake/exhaust upgrade. 8.0/9.0 compression piston. The head will be ported and polished and I'm looking for info on where to find the 1.70 intake valve I've seen so much about. Any and all help is greatly appreciated. And no I'm not looking to turbo or supercharge the motor.