M-1 Intake Manifold

Sterling said
I am assembling a 340 engine and have a M-1 intake laying around I was going to install. Is it worth the time to weld up the spread bore flange to a 4150 style ? Have a 700 Holley carb to use

i guess I'm lost here can't you just lay a 4150 gasket over top of the intake trace it out and then die grind it and done