Project Budget 400WHP S197 Mustang Track Car: Part 8 – Aero with Steeda and Ford

Steeda wing drill holes to mountAfter drilling the four mounting holes for the wing, we were ready to bolt it on.

Steeda wing mounting bolts MustangThe Steeda wing includes the mounting bolts and washers to attach the wing to the decklid.

Steeda Functional Wing profile MustangBefore installing the side end plates, we took a second to admire the actual airfoil design of this wing.  The profile is quite good and it’s impressive you can get a wing of this caliber for this price point.

Steeda Functional Wing MustangWe mounted the end plates and took the car outside to see the finished product (that still needs paint).

Steeda Mustang Functional Wing rearFrom the rear, the Steeda wing adds a bit of visual presence to the car without looking too extreme or ‘ricey’.  The wing follows the curve of the decklid while not sticking out past the width of the car.  This is the view a lot of the BMWs, Porsches, Camaros, and Subarus have seen from 2010-2014 in the GS class.

I think I will eventually paint the wing black since it plays off of the car’s silver and black theme.

Quick Reference:

Page 1 – Overview
Page 2 – Boss Splitter Install
Page 3 – Installed Boss Splitter Review
Page 4 – Remove Stock Spoiler
Page 5 – Clean Decklid & 3D printed Adapter
Page 6 – Mount Steeda Wing
Page 7 – Review and Aero Insight


  1. Another good Billy Johnson article. If the used car market wasn’t so insane, I would be all over a ’13-14 Mustang and follow all your advice to modify it. I have only ever had miatas on track, so some power would be a nice change.

    1. Based off of the goals for the project to be a budget track car that’s also driven on the street without beating you up, and from my experience racing the S197 (with this aero) the Steeda spring and bar rates were chosen accordingly. Stay tuned for when I track test and evaluate this setup!

  2. Great articles, Billy! I can’t believe I came across this one just as I am trying to reproduce the aero package of the GS cars ever since I saw them at COTA in 2013. Most people like the WC cars, but I have a heart for endurance racing and I always wanted to duplicate the 302R. Anyway, I bought the Steeda wing years ago, but am only just now getting around to figuring out the mounting “shim.” I have contacted many of the race builders and nobody seems to have any left in a box on a shelf somewhere. I thought it would be awesome if somebody could just 3D print them and now – you have gone and done just that! Uh, any chance you can share that file? Any help would be appreciated. My website link goes to my write-up of the 2013 COTA race with a couple of pretty good pictures of your car.

    1. Would be even nicer if Billy could print up a half dozen or so of these at a time and make them available to purchase cor those of us with no 3D printing abilities.

  3. What is the part# of the Steeda wing you used? I looked on Steeda’s website and did not see this wing. They may not have the correct photo posted.
    The 3D printed adapters would be slick.

  4. I am getting ready to do the same things to my 2006 Mustang GT. Please let me know if you have the adapters available. Thanks for the article!

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