Trying to finish my 67 before the fourth. I ordered a booster and MC from JEGS. Supposed to be the right one for the 67. The mechanic is telling me the rod that goes into the MC is too long. Make a long story short, I ordered the complete setup from Matts Classic Bowties. It was listed as the right part for the Pontiac. The setup came and it has a metering block that the original setup didn't have. What is that for??? I have 4 wheel drums. Please let me know what you think! Thank you The link to the booster in question http://www.mattsclassicbowties.com/index1.html