Engine Plate - Features 4 holes that allow for compensation for engine tilt. Fits the standard Holley 2 bbl. and 4 bbl. and Rochester bolt patterns., Engine Seal Up Kit - Engine seal up kit features aluminum plates designed to block off all openings in small block Chevy long block. Great for engine storage., Carb Storage Box - This heavy duty plastic carb box allows you to keep your 2 or 4 barrel Holly carb clean and safe., Versatile design, Universal fit.