When mounting on the 2 stations integrated type manifold block, mount it after cutting the gasket. Manifold Option Parts . Plug-in type, Non plug-in type Individual SUP spacer: VVFS3000-P-03-1 (Plug-in type) VVFS3000-P-03-2 (Non plug-in type) Individual EXH spacer: VVFS3000-R-03-1 (Plug-in type) VVFS3000-R-03-2 (Non plug-in type) SUP/EXH block plate: AXT636-1A Throttle valve spacer: VVFS3000-20A-1 (Plug-in type) VVFS3000-20A-2 (Non plug-in type) Interface regulator/A port regulation: ARBF3050-00-A-1 (Plug-in type) ARBF3050-00-A-2 (Non plug-in type) Interface regulator/B port regulation: ARBF3050-00-B-1 (Plug-in type) ARBF3050-00-B-2 (Non plug-in type) Double check spacer: VVFS3000-22A-1 (Plug-in type) VVFS3000-22A-2 (Non plug-in type) Interface regulator/P port regulation: ARBF3050-00-P-1 (Plug-in type) ARBF3050-00-P-2 (Non plug-in type) (157: With direct manual override) Individual SUP spacer (157: With direct manual override) Individual EXH spacer (168: With direct manual override) Interface regulator (168: With direct manual override) Interface regulator (168: With direct manual override) Interface regulator Throttle valve spacer Block disk mounting position Double check spacer (157: With direct manual override) 1528 Series VFS3000