when you install a turbo kit outside in 30-40 degree weather....
In the rain.....
And it takes 2 days.
When you are still installing new parts AT THE TRACK for those last few tenths.
When you realizes your mods amount to several times your retirement account.
"When ya change your tranny fluid to synthetic to get better cold weather shifting in January." -been there done that.
you can give the date and viscosity of your last oil change, but cant remember your GF's b-day.
How about "You have so many aftermarket parts on your car that you consider trying to register it as a kit car.