The OG Mustang

This is the car that started it all!

Chris built the OG in his two car garage back in 2019, prior to Ruffian Cars' existence. It was built as an all rounder, to drive to work on Friday, Cars and Coffee on Saturday and autocross on Sunday. It was inspired by the Trans Am race cars of the late 60s and early 70s, was built on a tight budget and debuted at SEMA 2019 in Toyo's Treadpass booth. Since then, it has proven itself at the autocross and the big track (see below) and logged thousands of street miles.

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Articles

  • TOP GEAR

    YOUNG RUFFIANS: CHRIS ASHTON'S WILD MUSTANG AND GT40 CREATIONS

    by Rowan Horncastle

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  • SPEEDHUNTERS

    RUFFIANS RUN WILD: CHRIS ASHTON'S GT40 & MUSTANG

    by Dave Thomas

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  • STREET MUSCLE MAG

    WHEN FORM FOLLOWS FUNCTION, YOU GET THE RUFFIAN

    by Vinny Costa

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1970 "OG" MUSTANG

BUILD SPECS

ENGINE

Engine: BluePrint Engine's 427ci stroker LS3 - 625hp, 550 ft lbs torque

Carburetor: Quick Fuel 850 cfm annular

Oil: Royale Purple

Engine Extras: Custom cold air intake

Fuel Type: 91 Octane

Fuel Pump: Aeromotive, in tank

Fuel Cell: Fuel Safe, 22 gallon

DRIVETRAIN

Transmission: 6-speed manual, T56 Super Magnum

Rear Axle: Oil cooled Ford 9in floater

Differential: TrueTrack, 4.11:1 ratio

CHASSIS AND SUSPENSION

Roll Cage: Custom 10 point

Reinforcement: Convertible seat risers and inner rocker rails

Front Suspension: Street or Track tubular control arms, 1" Shelby drop

Rear Suspension: Street or Track three link

Shocks: DSC Sport active coilovers

Front swaybar: 1-1/8"

Rear swaybar: 1" adjustable

Type: Unisteer hydraulic power assist

BRAKES

Manufacturer: Wilwood

Front: 13" 4 piston

Rear: 12" 4 piston

WHEELS AND TIRES

Wheel make and model: Signature ONE

Wheel Finish: Gloss black hoop, matte gun metal center, black hardware 

Front Wheel Size: 18x11

Rear Wheel Size: 19x12.5

Tire make and model: Toyo Proxes R888R

Front Tire Size: 315/30/18

Rear Tire Size: 345/30/19

BODY AND PAINT

Metalwork: All steel, custom fabricated

Front fenders: 1" Kar Kraft drop

Bumpers: Custom fit

Glass: Fesler flush mount

Paint and Body: South County Auto Body

Color: 1978 Porsche Olive Green #274

ELECTRICAL AND LIGHTING

Wiring: Painless

Battery: Braille lightweight battery in the trunk

Engine Management: MSD LS Ignition Control

INTERIOR

Gauges: Autometer Carbon Fiber Ultra-Lite

Seats: Cobra FIA historic

Harness: 5 point Corbeau

Shifter: Jake Palm

Fire Suppression: 3 nozzle system

Accusump hydraulic accumulator

AC System: Vintage air

SPONSORS

Toyo Tires

Signature Performance Wheels

"RUFFIAN MUSTANG" A Ruffian Cars Build Book (Softcover + PDF)

The Ruffian Mustang build book documents a hobbyist car builder's three year journey taking an ordinary 1970 Mustang and turning it into something extraordinary in a small two car garage using only basic tools and knowledge gained freely online. Follow along with detailed descriptions and hundreds of photos documenting initial teardown and rust repair to sheet metal fabrication, 3D printing, and custom body work. Whether you use the book as reference, inspiration, or as a coffee table conversation piece, it's a journey you're unlikely to find anywhere else.

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