My intentions are for daily driving and autox. So looking for strong bottom end and mid range torque. I want to be around 500hp/500torque
since its mostly for street, looking for realiablity. The Pump gas around here is 91octane so I would like to stick around a compression ratio that can run this.

Things I have:
its a 4 speed car with 3:55 gears with manual brakes
headers I have have 1 3/4" primaries
I have 383 and 400 block
I have a performer rpm intake,
mp performance water pump and housing
milodon road race pan
milodon oil pump
750 holly DP
650 edelebrock carb
march pullys
mallory uniite distributor
firecore plug wires
Rev-N-nator electronic box
I'll be sticking with the low deck for reduced weight and works with my air grabber setup, and I have some of the parts already

1)I have seen the 470 and 451 kits available is there a difference in price to build if the kits are the same price? or should i go with a different combo/setup to get around the hp/torque i need? the more money saved the better!

2)looking at heads as well, looking at bare units and just buying the components I need to mactch the cam. Would you reccomend the eddy rpms or the stealths?

3)cam choices - new to this dept but have an idea of what i want. Would like to get a hydraulic flat tappet for price and less constant adjusting needed. Would like to get something with a rough idle (I have manual brakes so I don't care about vaccum)with a rpm range from 1800/2000-6000.

4)Looking at ductile iron rockers (heard they are more dependable on the street than aluminum) isky no longer makes them who do you reccomend?

Sorry for the long questions - just trying to get this build done right the first time!