Let him drive that car, and if he wants to upgrade, he should work and save up for it. Pinapagamit na nga sa kanya yung sasakyan tapos aangal pa siya. Let him learn, besides if he just started driving and you give him a powerful engine like that, naku he will abuse it. Worse, he might get into an accident because he doesn't know how to handle the power yet since he has no experience.