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You shouldn't need the spacer on the 18 manifold. Spacer is used for the boss manifold since it sits a lot higher. This is my Vortech V3JT setup. If you buy the throttle body extension plug you can rotate the throttle body like how I have mine, that might help.Ik this is old, but how did you fit it without the spacer? I have an 18 manifold on my 16 and the throttle body hits the coolant hose that ys off into the thermostat and radiator.
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