The variation in scales depends on whether they are buying stuff from you or selling it to you. Our COPO Chevelle weighed 3700 with half a tank of gas. That was on scales belonging to a guy who sells you stuff so it might be a little high.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.