318 with K member

i am sell the engine out of my 69 barracuda, this is not the original engine i would have to think this started with a 6 in it, because the K member had metal added to it to make the 318 fit.?. solid engine i had no issues with it other then an exhaust leak off the manifold. we are think it is a 68-69 motor, it has a 70 intake on it....asking $500.00 OBO for both.
lambertville michigna 48144