Edelbrock Torker II 340 on a 1966 273 v8??

that pin is for locating stock manifolds. frequently they're gone anyway. conversely, you could drill you intake to fit.

anyway, what i was getting at is that's a manifold designed for more cubic inches and high RPM operation. it is not a great match for most stock engines.

can it be made to work? sure. but there's better options out there. and depending on what you've got-- weight of vehicle, gears, cam, type of driving you're going to do, there's alot better options out there.