The rare slant 6 factory intake is a dual 4, Tex Smith had one on the XR27 roadster for a while and I've seen one other on EBay with carbs and linkage where it sold for around $3500.00
'45 Ford PU 66 Valiant wagon, leaning tower of power. 79 Chevy C10 w/250 02 PT Cruiser Convertable