r/s650Mustang

Hey everyone,
Need some collective sanity check on a trade I'm looking at.
I’m weighing swapping my current ride—which is sitting at a very fresh 3,500 miles—for an immaculate, garage-kept Dark Horse with the Handling Package that has 25,000 miles on it. Making the jump also means adding roughly $10k to $15k to my loan.
Here is how I’m wrestling with the math:
The Mileage Jump: Going from 3.5k miles to 25k miles is a big mental hurdle. Even though the car is pristine and clearly well-cared-for, it's still a noticeable jump in wear on the odometer.
The "Build It" Trap: If I stay put, I know I'm eventually going to bleed cash buying the exact things the Dark Horse Handling Package already comes with out of the box—upgraded suspension, wider wheels, stance, proper aero/spoiler, headlights, etc.
The Financial Hit: Taking on an extra $10k–$15k on the loan plus taking a higher-mileage car hurts, but am I just paying upfront for factory engineering and parts that I'd end up piecemealing and buying anyway?
For those of you who have faced a similar crossroad: Does buying the factory spec pre-built make sense when you factor in modification costs, or is taking on more debt for a higher-mileage car a bad move no matter how clean it is?
Would love to hear how you'd break down the math

Hands down it’s the bola crossfire X pipe resonator delete. Sounds so good and still is quiet and chill mode. $650 but I think it sounds better than a standard X pipe.

2025 base Mustang GT six speed manual night pony package. https://www.tiktok.com/t/ZP8WjSGve/

Long story short, I own an automotive company and ended up winning a Roush Phase 2 Supercharged S650. Car is a blast so far.

I went looking for the cat earlier today before I left the house. I looked everywhere. He normally would be inside even his garage napping spots. I went outside in case maybe he snuck out. After about 15 minutes I went out to the garage and actually looked inside the car. My cat Oscar has a new napping spot!

Everywhere I looked, I cannot find a true breaking period. Kind of like the Corvettes where you can’t rev past a certain RPM till 500 miles is that the same for the new Mustangs. Trying just to get on it in first gear and I cannot get past 6000 RPM. I’m assuming it is protecting me since I only have 280 miles.

Is this a thing or has anybody else come across this before?

Edit: The car is a 6 speed manual

Totally love the car
Adriatic Blue, 6sp, Handling Package I only slightly regret not getting the recaros but don’t regret it much.

We added a Ford Performance/Whipple Supercharger to our 2024 Darkhorse and documented the dealer install process for those who might be interested in going this route.