Help Needed to ID Olds Weiand tri power intake manifold

I have a vintage Olds Weiand tri power aluminum intake. Has Weiand number W03D, I have a 57-58 [371] Olds tri power and the bolt holes look to line up but the ports on the Weiand are a lot bigger [ close to 1/2" taller] than the factory cast iron intake. Would this be for the 394 olds motors? Ports look like they never been enlarged. Someone changed the carburetor bolt pattern from 3 bolt to 4 bolt. Intake looks like it has never been installed.Any idea of correct application?

 

According to my Weiand catalog WO 3D came in 3 versions.

Model WO 3D AB Part #7259 49-56
" WO 3D C " 7260 57-58
" WO 3D D " 7261 59-63
States that it is designed for extremely high speeds. Can be used with 3 Ford carbs or 3 dual throat WW Strombergs. State year when ordering. Oh and they were $92.50 in 1965!!

Hope this helps.

 

Second series 371 and 394, '59-'64 Olds.
Looks like carburetor adapters to fit larger Rochester's like Pontiac tri-power setups

 

That's a cool intake....