Point is a 70 manifold is a squarebore one and you will need an adapter to fit the Speed Demon but no EGR valve to clash with the linkage, that's why telling us what you have is important.

Had it been a 73 340 intake then it would be a spread bore intake which should clear and you would have had EGR to deal with if it hadn't already been blanked off.

See how that works?