My 68 project Firebird with the standard hood has the cutout for a hood tach but the tach was not included. I don't know if the cutout was done by the factory or the dealership, but it does look professionally done and I just need to know if the mounting holes are the same for the GTO and Firebird hoods. I don't have alot of cash but I noticed that Original Parts Group has the GTO hood tach's the cheapest @ $189.95 It doesn't matter to me if it's not 100% correct, as long as it fits in the hood without any mods.