Car craft build a 500 hp 360 stroker for 5000*
Here in C. Springs, CO, I built a eddy head'd stroker with a roller cam, and the dyno sheet shows 540 HP and 545 ft/pounds of torque. That's with a edelbrock 750 carb and Air Gap manifold. FWIW.
I have right around $6000 in it.
Good luck!