FRONT AND REAR ENGINE MOUNT DO HAVE VACUUM FITTING. ENGINE MOUNT ALREADY TESTED FOR NO VIBRATION. DO NOT USE AIR GUN OR ANY POWER TOOL WHEN INSTALL MOTOR AND TRANSMISSION MOUNT, ONLY USE HAND TORQUE TOOL TO TIGHTEN THE NUTS AND BOLT TO AVOID DAMAGE TO PARTS.We are not responsible for item when subjected to abuse (off, road, competition) commercial use, improper installation, accident, or normal wear. We are committed to your satisfaction, Your satisfaction and need are our top priority. For that reason when you received an item please take a moment to leave us a FIVE STAR FEEDBACK. THANK YOU SO MUCH FOR SHOP AT OUR STORE.