I was wondering if there was anything I could do to strengthen this guy up for auto x, road course and daily driving. I won't be exceeding bolt ons (Intake, exhaust, header) the rest will be suspension. This has 120,000 miles on the bone stock car. The transmission was replaced at 60k under warranty for a defect. Is this strong enough to handle the duties with 90% of it being daily spirited driving?

 

The trans will be strong enough although you may want to consider a good lsd for traction. Just keep up on fluid changes and it will last a good while.