That bolt is the one I can't seem to find! Is it tucked behind the exhaust where it is inaccessible without pulling the manifold? Thanks so much for everyone's replies this really helps.

I'm new to the forum. I'm having difficulties figuring out how to get the coolant pipe that goes from the expansion tank the lower rad hose off of the car. I've disconnected the two 10 mm bolts from the block and the bracket that is just below it and all coolant hoses have been removed. Could it be ...