Your location does put a different spin on your quest. Hmmmm-- How about picking up a piece of sheet metal or even aluminum plate and working it to the same size/shape needed for your 4 speed. Get one of the repo decals or substitute some walnut colored contact vinyl. Not sure about the raised lip. This would be better than a feeble attempt to cut up the auto top plate. Then you could look at your leisure for a top plate you can live with. Good Luck!