Weight. Doctors tell us to lose it, trainers tell us to lift it, and racers tell us to shave it. Weight is one of those things that adversely affects performance. Weight has been a Mustang advantage for decades, with the GT typically weighing less than it’s competition Ford has been able to keep the Mustang competitive without having to win the war for who makes exactly the most horsepower at the flywheel.

It has been speculated for over a year that the upcoming S550 chassis 2015 Mustang would make extensive use of aluminum, including on at least some of the bodywork to reduce the car’s weight, upping its fuel economy and performance. This is understandable with upcoming CAFE standards (Corporate Average Fuel Economy) imposed by the government, which will make selling any V8 powered vehicle more difficult. We had heard 200-400 pounds thrown around, but Ford has been silent about the weight of the new car. They’ve also been silent on the horsepower numbers.

As we told you just a few weeks ago, on June 1 the Blue Oval released CAD data through SEMA’s Tech Transfer Program for the upcoming 2015 Mustang and F150. This data allows aftermarket companies to begin prototyping parts long before they have the cars in hand.

According to a recent blog posting and news release from Steeda the opposite is true for the 2015 Mustang. Steeda is stating they have begun prototyping parts for the 2015 Mustang and according to the data they have received the new 2015 Mustang is 200-300 pounds heavier than the outgoing 2014 model.

If that’s the case then the 2015 will need a big boost in power to keep up with its rivals on the track and street. Steeda says they are already working on performance components for the ’15, with an increased focus on weight reduction, and will be track and street testing these as soon as they can get their hands on the four models that are supposed to be headed to their prototyping centers.

There is no validation yet on the weight of the 2015 Mustang from Ford, so we have yet to know whether the data Steeda’s engineers have in hand is accurate in terms of weight. Time will tell, and until Ford releases final numbers, all Mustang fans everywhere can do is hope and pray that the information Steeda has is wrong.