What would win in a race around circle track? porsche vs BMW?

so my dad owns a 1987 porsche carrera that at stock with new axel and a redone engine runs 205hp and weighs 2400 pounds curb weight.it has proformance tires on it. my friend who owns a 2008 BMWm3 thinks he can demolish my dads porsche in a circular track race. who is right?