340 MANIFOLD VS MAGNUM MANIFOLD ?

Treblig said
I've never tried to install 340/magnum manifolds on EQ heads but an adapter should work if it doesn't push the manifold too far out away from the engine causing interference????

Just making the plates up today out of 3/32 thick 2 1/2" flat bar.
Going to try steel on cast iron with high temp silicone as the sealer.