This is an original 1968 Chevy Corvette 327 intake manifold that was left over after restoring my 68 Corvette roadster. This 327 intake manifold is model 3918803 and the date code is H15 67 (August 15 1967).
I believe this intake manifold will work on a 350 also, but please check your application to make sure it will work. If this ad is still posted, then the manifold is still for sale. I will remove it once it is sold, so please don’t ask if it’s still available.