Check with Wayne Presley 760-403-6266 Enterprise, Alabama
He has a dyno shop. Very Cool Parts
Enterprise is close to the Ga. border.
Southeast corner of Ala.
Aside from Cobras, GT350's and others they have a lot of experience with GT40's. They also have the expertise with Webers as does Jim Inglese. (not the Comp Cams Inglese) Long story, but the same Inglese.