Porting Question

Thanks everyone!!

1wild&crazyguy, how much can I get the kink out without hitting water?
Is that a water passage that is in that area, well it looks that way if I eyeball it, like it goes to the freeze plugs at the end of the heads.
But what do I know, this will be my first attempt, lol.
I guess I'll just do what I've read and try not to be too greedy, lol.
Thanks again!!