1965 Chevy Chevelle 327 300HP exhaust manifold set driver side LH has alternator bracket, passenger side RH has choke tube unique for the 64 and 65 model years with heat riser valve take a look at exhaust pipe from the passenger side you can see it goes from 2 inch to 2 1/4 inch for the327 300hp dual exhaust $200.pair 1965 Chevelle 327 300 horse factory original Canadian 4-barrel air cleaner breather mounts onto the Carter AFB 4-barrel and Rochester 4 jet carburetor $150.