'70 440 Exhaust Manifold Casting Numbers

[cdsacco]

Does anyone know the correct exhaust manifold casting numbers for a '70 Challenger 440?  Need both right and left sides.  I have an RT/SE with a 440 and 4spd that I'm restoring.  The car was built on 10/16/69.  What date should I be looking for on the manifolds?

Thanks for your help,
Craig

[leg340]

for the right is 2951865 and left 2899879 can be 70 or71 on date code those 2 number are for 70 71 e body 383 or 440  

[js27]

Craig,
the date codes for the manifolds varies. It should be around 6 to 8 weeks before the build date give or take a few weeks.
Good luck
AL