243 heads for my ls1 or intake

I'm doing little research and wanted to ask you guys and girls opinions on what to do.
Truck is currently cam only with bolt ons
Assume stock ls1 heads 00 c5 is on the truck.(853)
I'm wanting to find some 243 heads and have them ported as well.
When buying the heads what do I need to look for to tell if there in good shape?
Where do you all recommend as far as a machine shop?
And motor currently has stock truck intake. Can I have that ported?
Was wanting edlebrock high rise intake. I know have read that's better for boosted apps but if I buy intake that is the one I will buy. With that I have change tb 4 bolt which I will get 90mm. And I have change fuel rails as well.
Thanks for any tips or advice