Retno intake manifold is for Weber 48 IDA’s carburators and also can be used for EFI on BBC Chevy. The manifold plate and installed runners is st up to accept the Weber 48 Ida's carburetors. This Intake is for a Big Block Chevy set up to accept 4 down drafts 48 IDA Weber carburetors, 396, 427, 454.
