I have finally finished my wife's engine, Broken in the cam, checked it over. all ready for the oldie but goody drags this weekend and I check her belts, bummer expired.I got to looking and the mfg tag said they were made in 2006??? but the sfi tag was punched May 2008??? I ordered a set Monday the 31st. same brand and style. I received the new set today. I looked, they were mfg ed in 2010. The sfi tag had june 2010 punched. Made in Michigan, sent to Sparks Nevada and then to me in 3 days !!! Do you suppose the part house punches them when they sold them? And they are only good for two years, ya right! Sorry but that's too funny!