Yes the lower right bracket mount would need to be shimmed (same thickness) and the upper just needs a extension. Simple fixes. The studs/bolts would most likely need to be replaced with longer ones too. Since it's a complete unit itself it can be repositioned without screwing up any cable alignment.
As for a phenolic spacer. That what I used. A 5/8" piece of flat stock and drilled holes in it. Used a drill press and a cut out bit for the bore & then standard bit for the mounting holes. Used the 65mm TB gasket as a template.
I thought you were talking about the manifold itself.
