Overview Reviews Product Description This is a Skunk2 factory replacement 3.5L Plenum part for the Ultra Race Side-Feed K Series Intake Manifolds; 307-05-8000, 307-05-8050 and 307-05-8055. Product Videos Custom Field Product Reviews Write a Review Write a Review × Skunk2 Racing Skunk2 Ultra Race Side Feed Plenum Kit for K Series 3.5L - 5.0 Ford Bolt Pattern Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *