Smallblock intake manifold shootout.

A-BOMB360 said

Offy Port-O-Sonic tried to bridge the gap between single and dual plane intakes..

Click to expand...

I've got both an Offy Port-O-Sonic and an Offy 360*. The Offy 360* was the bridge the gap intake (essentially a single plane with a plenum divider), the Port-O-Sonic is a single plane with pretty large cross section runners (no plenum divider).