M-1 Intake Manifold

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
You don't have to do that AT ALL! Just use the thin steel plate from Edelbrock. This is all you need.
Edelbrock 2732 Edelbrock Carburetor Adapters | Summit Racing