These are the ones I bought.
https://www.amazon.com/gp/product/B087JWJRQ3/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B07SPFBTG1/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
I bought a set of Steeda end-links, but I have MagRide, and the grease...
I had a noise like you describe... I chased it for 6 months. Nothing was loose... even used a dead-blow hammer to try and find it.... nothing!? I finally replaced all my sway bar end-links (all for corners)... boom, noise gone. And yes i checked them during that 6 month hunt.
After replacing, I...
I've had both, DSS and Steeda (< still have). And yes, the DSS adds a ton of NVH; the difference is that the Steeda is foam filled. FWIW, for a daily driver, Steeda all the way.
Mine is smooth in normal mode, but quicker and firmer in S. I had mine tuned to a 5% bump in line pressure (is S). Other than the tune, changed the fluid/filter and pan to a aluminum PPE, which bumps the capacity a bit (slightly deeper). All in all happy with it... now that I say that, here come...
It's the 85/15 rule... 85% do it & 15% lie about it... even LEOs.
For those that "now" want to jump on their soapbox... save it. Don't speed it VA you'll regret it.
... additional info. If you looking for a Ford quad tip diffuser (for a 2015), there is only one, but it's a bit pricey: https://www.americanmuscle.com/ford-gt350-rear-valance-1517-gt-premium-ecoboost-premium-1518-gt350.html.
For a fairly comprehensive (for a 2015) list...
I have a 2018. When I search, by VIN, this is what I get: https://parts.ford.com/shop/en/us/body/bumpers/bumper-extension-rear-p-jr3z17f828ba?pdp=y
As far as fitting a 2015... I am not sure.
recently had a removal and I used 25 lb fishing line.
Once the spoiler was removed I used these to remove the 3m tape : https://www.amazon.com/dp/B00FJF0O2K?ref=ppx_yo2ov_dt_b_product_details&th=1
and these
https://www.amazon.com/dp/B076BBW1WM?ref=ppx_yo2ov_dt_b_product_details&th=1
finished...
I threw codes with the standard Kooks cats, and thought the greens would be better ($1700 mistake). I threw codes until I had it tuned... my tuner quoted 30% leaner than it should be... no codes after the tune. Also recouped about 50% by selling the non-green cats... lesson learned for sure.
Running Kooks 1 7/8" LTHs with Green Cats (also Kooks), and performance connects (also Kooks - full 3") to Borla Atak (valved) on a 2018 PP1. I "always" start in quiet mode, as it's ridiculously loud. Once it calms down, the idle in normal or track mode is fine, but WOT... make sure there are no...
No spacers, no rubbing, no issues.
The only issue is... if you run an aspect ratio of 35... Michelin doesn't make a PS4 in a 305/35/19.... so I went with a 285/35/19 PS4 for the front and 305/35/19 PSS for the rear.
Get the Ford Performance PP2 (or Mach 1) wheels and stagger 285/35 fr x 305/35 rear. I've been running that set up on my 2018 PP1 for 4 years...
Mach 1 wheels: https://lmr.com/products/mustang-ford-performance-mach-1-handling-pack-wheel-15-22
PP2 wheels: Front...