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Q: I need the torque specs for the Plenum on a 1999 buick century custom on 1999 Buick Century

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have replaced the intake manifold, but the kit doesnt come with the torque specs and have found them for the heads and intake but not the Plenum.
(1) Answer
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Intake Manifold Coolant Pipe Bolt .... 89 in lbs (7.4166 ft. lbs)
Lower Intake Manifold Bolt .............. 115 in. lbs (9.5833 ft. lbs)
Upper Intake Manifold Bolt/Stud ...... 18 ft. lbs
Valve Rocker Arm Bolt ................... 168 in. lbs (14 ft. lbs +30 degress