This is a brand new exact reproduction #3963569 Intake Manifold for Corvette, Chevelle, Nova, Camaro, and Monte Carlo. Used on LS6 454 and L78 402 engines in 1970-71. Correct in every detail.
1970 L78 or LS6
Chevelle 402/375hp and 454/450hp
Monte Carlo 454/450hp (unverified)
Monte Carlo 454/425hp (unverified)