Do you think that with port work and stock intake valve's he could reach his goal? What about the exhaust valve, would going to 1.600 be a good idea? A 9.0:1 cr would help
With a streetable cam and cr a stock 318 head is good for around 300 hp up the cam and cr 318+ hp out of stock head shouldn't be a problem, well ported over 400 + hp.
The Cam size they can grind out of the stock cam is gonna limit what they can do.