I am currently debating whether to get an E30 M3 or a 92-3 325is. I have noticed that the acceleration 0-60 between these two cars (stock) is relatively the same. I was wondering what would be the best performance modifications for the M3 for the least amount of money. About how much horsepower and torque do I need to get the 0-60 acceleration to around 6.0-6.3 seconds? Also how reliable are these cars with these modifications?