'71 340 Cast Intake

It looks like you are running a '69 340 in your '65 Barracuda. I agree with the above. If you definitely want a stock 4-bl manifold, go with a '68'-69 version. If you were considering the '71 just because it popped up and you are open to an aftermarket, consider one that works with your motor and the rest of your car's (not just the engine's) components. I just noticed that you are also running a 3500 converter so you may want to rethink the type of manifold you run on your car. Good luck