Good suspension also reduce fatigue on long distance travel. Can feel the difference. Same goes for tintLight weight rims will do wonders.
Good suspension, tyres and brakes will help you corner.
Tint will cut out the bloody hot sun.
A nice hugging Recaro will help you corner faster (I'm not even kidding).
The right bars will do wonders for handling too.
Once he did the suspension he will felt that the chassis is not up to par and few weeks after that he will ask which bar to install. Good chassis 'tuning' + good suspension + good tint will makes him enjoy the car more.
Few month after that he will outgrew the car and felt like it car handle a bit more horses..
This experience thread will go on for years.