340 X heads or any head with 74cc Chamber

Hi all, I am looking for a pair of 340 X heads, or any small block heads that have the big combustion chamber (74cc) to lower compression on my 360 I'm building...hoping someone local to me in the Sacramento or Bay Area....if not be willing to ship...thank you!
I have pair of 360 heads , 75 or 76 vintage they have the smog ports on the sides, easily plugged. Been sitting for 10 yrs or so in dry storage.