what is the greatest achievements you did on your car.

I HID MINE FOR TWO YEARS BEFORE THE WIFE FOUND IT! That count?
I remember finding a 74 road runner IN TOWN for $1000.

A deployment goes by, another month and then the wife is setting up an inflatable sprinkler slide for our 2 year old and she asks, “Where did this road runner come from? Did you buy another car?”
...hehehehe