Wow , what an ordeal ! Since I was changing spark plugs , I figured why not put on a Mace Spacer ( 12mm ) . Changing plugs is fun like a barrel full of monkeys ( Yeah , not fun at all ) To the spacer : My VZ has these little locator pins , and they didn't want to come out ... And the Mace spacer has no holes for the locator pins : So I had to drill some , Im just glad the gaskets were intact when the manifold came off so I could use them as a hole guide . I made the guide holes a little oversize so I had some wiggle room . Unfortunately the holes marked 1 and 2 did not really align well .. About 2-3mm to far forward . So the 4 big bolts in the middle of the manifold went in fine , but the single bolt at each end ( small bolts ) , they didnt want to go in .. Back to square one : I enlarged holes 1 and 2 a fair bit and elongated them back toward the spacer ( 4 big bolts ) , this time I did a lot of test fitting . Once I was happy with the test fitting , I assembled for the 2nd time .. This time things went well , and it went together reasonably easy . Just waiting for the blue stuff to cure ( 24hours ) What a day ! I sure hope the car still runs ..:rofl2: My advice to anyone : If you are doing it to a VZ , change your spark plugs at the same time ( Why not ) Test fit the spacer , put the bolts in , dont use the blue stuff yet . Only if it test fits ok , then move onto doing a permanent fit !