Guess the hp/torque on street 589ci wedge

Indy R-1 cam?...276/276/.620/620, could be...yes we plan to run it as is for now as he's having to spend lots more money on a cage/Dana/mono's/2.1/4" hdrs, built 727/converter/slicks etc., I just hope he buys some dble adj. shocks as well, basically revamp the car to handle what he has now, it will hook and go as it did before with SS springs etc., but with almost twice the hp/added torque. I can't see him wanting to change pistons and up the CR so perhaps some more lift on the cam and a bigger carb may work for future 9sec performances and sorting the chassis. Planning stuff like that ain't easy when you don't know exactly whats inside the motor, but its gonna be interesting to see how it all goes, sort of like it was when I was racing with my junk.
I thought the -13's were half reasonable ootb, somewhere near 340+@600?, I know the -1's are rubbish ootb.