340 Max HP Potential with X/J heads?

I am not like most. I enjoy seeing a stock, iron head made to flow by someone that knows what they are doing. The simple fact is, they CAN be made to flow. Everything costs. You just decide where you want to spend and go from there. It takes real experience and talent to make old iron flow well enough to support a stroker and some people can do it. I have great respect for that.