'96 F350 7.5 V8 Exhaust Manifold Leak

There is an exhaust leak coming from the passenger side by the exhaust manifold, I cannot exactly pinpoint where it is coming from, I know there is no donut gasket from my little research. Is this a common problem on the 460 big block? A new manifold in only 75 bucks and the gasket is 10, should I just change the manifold or start with the gasket only? Are there any special considerations with this project? Thanks in Advance for your help!