Linkert carb questions

Your M-5 would have a 3-bolt flange for small ports; Your FL heads would have large ports, for which manifolds have 4-bolt holes. I had to make my own. Otherwise, the Linkert ain't the most efficient carb in the world, but you can make it work on anything.

Find an M74b and change over to oring style manifold. Or get a S&S e or mikuni and adapter save your sef some fuel starvation lean out when you lean on it problems before they happen

use a 74b better for parts and you can find Kits and parts easier