The county where I live in WI requires our vehicles from 1968 on up to pass an emissions test. When I brought my Challenger up from MO in March 2004, in order to get registered and then get my collector car plates I had to pass the emissions test. Kept fiddling with the carbs, on the third try I finally passed. Car ran like sh*t, but it passed. The funny part about this is what the testing inspector said to me after I passed. " Now go on home and fix it so it runs like it should ". Which I did, but these guys know the score and what us car guys will do. What a joke - once you pass, you fall off their radar screen, then you can do whatever you want. These emissions tests are worthless and unnecessary. The nice thing about the collector car plates is that once you have them, you never have to undergo another emission test again as long as you own the car, and you never have to renew your plates.