64 barracuda 273

The OP's car is said to be a '64 Barracuda, but, I'm guessing you were referring to Jeff's 67. If so, he stated that his has ported J heads on it. My impression is that the OP has access to a '67 273 BBL intake and was considering using it with later heads than what his '64 has. If I'm mistaken, I hope he will correct me and supply some further information.
"I’m in the start of rebuilding my 64 273 , i have 2 questions is i have 318 heads available with a 4 barrel intake from a 67 barracuda"
I suppose that can be read either way; "I have 318 heads available, with a 4 barrel intake from a 67 barracuda", or "318 heads with a 4 barrel intake from a 67 barracuda".
Funny how much difference a comma could make!