Why mess with perfection . . . ?
The Sonic is good as is. A good, cheap, nice little car, comfortable, decent ride, decent power as a good daily or even nice little sporty run about for day trips.
In the LT trim or higher it has more than most other in the segment. Even 5 bolt 18" wheels or larger. Not too many sub compacts with that !
Buy it, drive it, don't monkey with it and wreck what is ok.
"Making it your Own ? " Aah-h-h-. . . . so many do that and end up on a never ending spiral of also making trouble and breaking things. What a great way to ruin a good car on an already limited budget for many who buy a Sonic to begin with.