A Celebrity Restomod: Robert Downey Jr's Boss 302 Mustang

A Celebrity Restomod: Robert Downey Jr’s Boss 302 Mustang

June 29, 2018

Robert Downey Jr. is a man of many talents. Whether keeping audiences spellbound as Iron Man or creating music, his talents are prodigious. What’s probably less well known is his excellent taste in cars. His expensive and expansive collection includes several Audi R8s, a Corvette Stingray, and a Mercedes-Benz Pagoda. It also includes this wonder: a restomodded 1970 Boss 302 Mustang. Built by SpeedKore Performance Group of Grafton, Wisconsin, the Mustang maintains its classic Boss cool while also being forged into a lethally modern and fast machine.

As you’d expect, the engine was the first thing to go. The old 302 was removed and replaced with a 5-liter supercharged Ford Performance Aluminator V8 producing 667 horsepower. This is linked to a Bowler T56 transmission and a 9-inch rear differential by Detroit Speed, while exhaust flows through a custom Speedkore set up. The Mustang’s handling has been tightened with a new Detroit Speed frame, Quadralink suspension, and reinforced subframe.

Both the exterior and interior have seen a fair bit of modernization. Carbon fiber has been used for the hood, fenders, bumpers, and more, and it’s been finished in Tuscany, a PPG Khaki blend. The Mustang’s wheels are completely custom, designed by HRE wheels and RDJ himself, with the classic Panasport wheel serving as inspiration. This bespoke approach to design continues inside. The seats are coated in brown leather, and analog dials and a three-spoke steering wheel complete the car’s retro look, with Vintage Air also fitted. The interior work was handled by Gabe’s Custom Interiors of San Bernadino, California.

1970 Charger Showdown: Classic RT/SE Hemi vs. RestoMod Hemi

June 23, 2025

When it comes to American muscle, few cars have captured the hearts of enthusiasts and dominated the silver screen like the Dodge Charger. From…
Read more
The RM30 1970 HEMI Dodge Charger RestoMod

April 22, 2025

The 1970 Dodge Charger is one of the most iconic silhouettes in American muscle car history and RM30 takes that legacy to the next level.…
Read more
RestoMods Garage Update

February 11, 2025

1967 Chevrolet Chevelle (Ground Up Restoration) The 1967 Chevelle 427 is coming together, now sitting on a Roadster Shop chassis that completely transforms its handling…
Read more

Show more articles

Become a Car Club Member

Car Club Members Get Entries to Win, Discounts in our Shop, Discounts with our Preferred Partners and more!

Membership benefits

By joining the RestoMods Car Club Today, you will receive amazing perks plus 15 bonus entries into our sweepstakes for every month you are an active member

Auto Discounts:Curated Discounts From Your Favorite Parts Companies
Restomods Monthly:Monthly Magazine With The Latest Industry News
Classified Ads:Get Free Postings seen by 300,000 enthusiasts monthly
Car Show Tickets:Check out the biggest vintage car shows on us.
Exclusive Car Deals:First chance to purchase any prize cars not selected