I am installing the origional QJ on my 68 400 motor. It had an Edelbrock 750 that was put on the O.E. intake. ??? why would you do that? Anyway I had a base gasket for the QJ but it appears it must be for a later model carb as the passageway in the front of the intake was partially exposed. So I need to pick up a gasket that covers everything I am sure, but I seem to rememebr that on early QJ's there was a thin metal plate that was in between the base gasket and the intake. My question is did Buick use this on the 68? I know on the nailhead QJ motors they did but I do not remember if they do on the 67 and up big blocks. Anybody have an answer for this one?