Where's the date code on this manifold? I only see a "GM1" and the firing order stamp... That code C148 is on the block next to the distributor port. This is the only other decent pic of the intake.... I'll need to look around on it...
'68 400HO Coupe, 4 spd, 259 interior, Windward Blue. My other car's a Johnson 15 outboard on a '61 Starcraft rowboat... Just sayin'.