Hemi swap using OEM Exhaust Manifold

5.7 and 6.4 are different. The 2010-2011 Grand Cherokee 5.7 log style manifolds work on 67-76 A-Body. The SRT 6.4 Grand Cherokee manifolds are a little different in design. Not quite the the log the 5.7 is. No one has stepped up to say if they have tried them or not.