Search through what some other members have made with the 2530's on stock manifolds and a 100% stock longblock. I have personally seen a car run over 28 psi on the dyno with 2530's and ported stock manifolds and still not break 550 rwhp. The setup is backpressure limited, so that even if you can run the higher boost, you will reach a plateau on the power output. I am sure with the inconel manifolds and more ideal conditions the hp would be in the upper 500's.