W2 Heads for a 340 Block...

I think I am actually going to end up using a 360 block, I have been looking around and it just seems that with me trying to keep it under a decent budget I can come across a short block 360 for much much less. I am going to be using the six pack hood, so with that scoop it should give me the required hood clearance for almost anything, what kind of lift and duration do you think would be good for a motor like that, keep in mind I want to get the most power I can, but I want the motor to be streetable also.