Headers for 85 LeSabre

My 85 Lesabre has an exhaust leak. Right now it's too cold to verify exactly where, but it seems to be either the manifold gasket needs replacing, or the manifold is cracked. I'm thinking if I have to go through all that work to fix the problem and possibly have to replace a manifold, why not install headers instead. My question is, has anyone tried 80's Cutlass 307 headers in their B body?