cylinder head question?/AGAIN

Well, that's a big range and the message I was trying to get across. BUT, your questions...

Now I just need to know how to choose a cam , camshafts are foreign to me when it comes to duration lift and centerline and all that.I also want to know will my stock con-rods hold up to that amount of power or will I have to purchase stronger ones??

On the con rods. The OE units can handle the HP. BUT If they require resizeing, striaghtening , balanceing, well, the cost of doing so can add up very quickly and end up more than new rods. The OE rods strength is not in question at these levels, correcting any issues with them is and at the cost it'll take.

On a cam, this is a street engine?

This subject can get tricky and it will certainly have alot of opinions.
Lets get some basics out of the way. Answer this list to help zero us all in on a decent selection.

We all know it's a big block 383 Duster.

Trans type?
Gear ratio?
Tire size?
Intake manifold to be used?
Would a stall converter change be OK for you?
What is the overall goal of the car. Not in terms of HP, but as a;
Daily driver, street strip or just strip car?
Is idle quality important?
Lastly, what type of cam is the one you want to run? A Hyd., Solid, Hyd roller or solid roller?

Hyd. cams are easiest to drive and live with and require zero maintanice. (SP?)