Thanks John...that's the shot I was looking for. The valve I have, looking at your pic, will be at 9 o'clock where yours is at 3 o'clock and the weight will be pointing the same as yours, towards the fender well. Can I assume that even these heat valves have differences in them? Or will/should they all be the same? I was looking at my survivor 69 Impala LM1 and the valve is installed with the weight on the left as well with rams horn (center dump) manifolds.
Reason I brought this up is because I took the headers off my Z to install the manifolds about a 1000 miles ago and noticed that the passenger head pipe was pushed up tight against the floor. I'm still wondering if I even have a packing donut in there. I'm sure I do since there isn't any exhaust leaks. I hate bring this up but I felt like I needed to. Always had headers on my cars so I have never seen what I need to connect UNCUT head pipes to manifolds before. At least now I know I need to get new studs ( short and long), 2 packing donuts, 2-2" head pipe extension tubes and a flat gasket. I should be all set then.