Edelbrock Victor Series Race Cylinder Heads or Trick Flow cylinder heads

Is this a rebuild or looking to change out cam and heads deal?

Those big valves in the Victor head would be too big for the 318 bore. You also have to consider different headers and valvetrain. It's not standard LA.

Trick Flow 190's use standard LA intake manifold and exhaust.

It depends on your budget and how far you want to take it. If your budget doesn't line up with how far you want to take you need to identify some compromises.

It doesn't seem like you want a a sub-$3000 budget build if you are looking at heads that run $1100+ to $1700+ a peice. Definitely not a budget build if you are considering the Victor heads because you will need other high dollar parts just to make them work (TTi headers).

With the 318 you are going to cross the Victor off the list. with 318 cubic inches I wouldn't jump right into the Trick Flows without identifying what your goals are. If you want a strong street engine you can get by on the Edelbrock Performer heads. I had a 318 with the Performer head and intake as part of their "Top End Kit". Forgot the cam specs but that thing moved!

If you don't want to compromise why not find a 360 block and start there? It doesn't cost anymore to build than a 318 and the extra cubic inches would take better advantage of a better heads CFM.