The tailpipe and muffler shop boys use a stethoscope with the end lopped off to pinpoint exhaust leaks and to QC welds. This might be a good vauum leak hunter, too. ===== Kenyon Wills 6o LeBaron - America's Most Carefully Built Car 73 LeBaron - Long Low & Luxurious __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com