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TL;DR

Mustang (S550) Shelby GT350Tourers, Smart Money
Biggest reasons are Fuel Economy (+24%) and Crank (flat-plane).
Mustang (S650) Dark Horse
Biggest reason is Crank (cross-plane).
Spec Ford Mustang (S550) Shelby GT350 Ford Mustang (S650) Dark Horse Difference
Model Years 2016–2020 2024–2026
Release Date 2015-08-31 2023-05-29
Body Style coupe coupe
Configuration V8 V8
Displacement 5.2L (315 ci) 5.0L (307 ci) -2.4%
Engine Code Voodoo Gen-4 Coyote
Crank flat-plane cross-plane
Aspiration naturally aspirated naturally aspirated
Fuel gasoline gasoline
Redline 8,250 rpm 7,500 rpm -9.1%
Power 526 hp @ 7,500 rpm 500 hp @ 7,250 rpm -4.9%
Torque 429 ft·lbs @ 4,750 rpm 415 ft·lbs @ 4,900 rpm -3.3%
Compression 12.0:1 12.0:1
Bore × Stroke 94.0 × 93.0 mm 93.0 × 92.7 mm
Powertrain ICE ICE
Drivetrain RWD RWD
Transmission manual 6-speed manual 6-speed
Curb Weight 3,761 lbs 3,997 lbs +6.3%
Power-to-Weight 308 hp/ton 276 hp/ton -10.6%
0–100 km/h 4.3s 4.0s -7.0%
Top Speed 180 mph 166 mph -7.9%
MSRP $60,440 $59,265 -1.9%
Fuel Economy 21 / 32 / 25 mpg 16 / 24 / 19 mpg -24.0%