I have been on the hunt for months on this subject. They are $200-$300 for a used one. 69firebirdman told me about the aftermarket one and it's at the Parts Place. I think it's a cobble of questionable quality with a switch that isn't really for that application. It doesn't look close to original. If you are going to put a switch near the carb that's not original you might as well go to your nearest auto electric shop and buy one of theirs cheaply. They will tell you it will have a questionable life span because of the heat of the engine.