So it's pretty much set in stone that if both cars are relatively the way they came from the factory the 'Cuda is ~ 3,300 lbs. and the GTX is ~3,800 lbs. per owners with firsthand knowledge.

Should be a good race.

Oh yea, with a mild 318 with 360 heads and severe traction limitations my '71 ran 14.9's @ 95 with 3.23 gears. (340 would've probably been faster but my gross hp was around 320 according to calculators)

With mild 440 and same lousy traction/street tires it ran 13.5's @ 104 mph. HP was around 400 gross in this case.