Ford first showed us the 2015 Mustang in December, and we've been on a

slow information drip ever since. Pricing and juicy new Track Apps

have trickled out, but weights, power numbers, and torque figures have remained conspicuously absent … until now.

Here are the official numbers, straight from Ford, "pending certification." For this sixth generation, the base 3.7-liter V6 model's power rating drops from 305 hp to 300 hp. Torque holds steady at 280 lb-ft. Compression ratio for the V6 is 10.5:1. The base V6 fastback with a manual weighs in at 3526 lbs, an increase of 30 lbs over the 2014 model. With an automatic, the curb weight is 3530 lbs, a 12-lb increase.

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The GT, which uses a rowdier version of the outgoing 5.0-liter Coyote V8, now has 435 hp and 400 lb-ft of twist, up 15 hp and 10 lb-ft from its predecessor. The compression ratio is 11:1. Roll a base 2015 6MT Mustang GT fastback onto the scales and it'll show 3705 lbs. That's an 87-lb increase over the 2014. With the new automatic, the Mustang GT weighs 3729 lbs, a 54-lb increase.

In EcoBoost guise, the 2015 Mustang offers 310 hp and 320 lb-ft of torque from its 2.3-liter turbocharged four-cylinder on 93-octane gasoline. It's a twin-scroll turbo—the first ever used on a Ford. The compression ratio on the turbo 'Stang is 10.5:1. Whether all that will be enough to win

over Pony purists is still to be determined.

And what does the EcoBoost weigh? In base trim with a stick, 3532 lbs. That's 36 lbs more than a V6-equipped 2014 car. The EcoBoost automatic weighs 3524 lbs. That's a 6-lb increase vs. a comparable 2014 V6 automatic.

The big discussion topic will doubtlessly be that the V6 has been dialed back, presumably to put more space between it and the step-up EcoBoost. As for the latter's 2.3 turbo, we have to believe there's plenty of upside left in that one, too.

RELATED: 2015 Mustang fastback starts at $24,425, convertible at $29,925

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