I don't think they've said curb weight publicly but the regular R weighs roughly 130 lbs less than the track pack GT350, which is similar to regular Mustang GT. GT curb weight starts at about 3700, so dry weight base model R is probably in the mid-high 3400s, based on 16 gallons of fuel, 8 quarts of oil and whatever other coolant/fluids it holds. It's rare that anyone I talk to over there discusses dry weight. They are big on curb weight.