GMC Sierra 2500HD (2014) is 1337 mm (52.64 inch) longer, 172 mm (6.77 inch) wider, 677 mm (26.65 inch) higher and has 1533 liters (54.14 ft3) bigger cargo space than Toyota GR Supra (2020).
Toyota GR Supra (2020) is 1289 kg (2,842 lbs) lighter than GMC Sierra 2500HD (2014).