Stereo system for volvo?

i have a 2003 volvo s60 i want to put a stereo system into it but people tell me if i mess up one thing i will mess up my computers really bad cuz volvo's are run off computers. also, i like A LOT LOT LOT of bass to the point where the car shakes. i wanted to get a 3,000 watt amp with 2 rockford fosgate t2 speakers. i wanted to know what other good stereo systems with a lot of bass out there for around $500