Weiand aluminum tunnel ram intake manifold and plenum for dual quad 2x4 Holley 4150 4160 carburetor – Fits big block Chevy oval port V8 applications with factory oval port heads - Tunnel ram manifold is in very clean “as found” condition – no cracks or weld repairs - Tunnel base is cast 5981 with 1913 casting plenum – 2x4 dual quad Holley 4150/4160 plenum casting – blasted with natural unpainted finish shown – small cleverly hidden 1/8” NPT vacuum port under the plenum - very nice overall condition