Another 489bbc question

[Roll'nSlo]

I'm working on building a 489 for my '66 c10. I'm not fond of boring any engine .060" if not needed. My question is with 781 heads rebuilt with stock size valves and running roughly 10:1 CR, how much HP does everyone think I can get? I know cam, intake and carb play part in it too. I haven't decided exactly what I'm going to use in those dept. either. I guess any direction or suggestions on them will be helpful too, thanks.