first time stang owner but have only owned fords i bought a 89 lx 5.0 a few days ago and i love the car but have found a few issues that im not sure what to do with..the car runs and drives great other then it needs new front rotors..the rear right side brake is not working atall..i thought maybe it was because the car had sat for a while but i drove it home about 60-80 miles and the rotor still has surface rust on it so i kno the caliper is not working..i didnt see a crimped line or anything so idk..it has the rear end out of a 96 cobra so 4 wheel discs and 5 lug conversion..also the amp/volt meter on the dash bounces around and the battery light flickers and the lights..i was thinking a voltage regulator but im not sure...im gonna be getting rid of the clutch fan and installing an electric fan,,should i upgrade the alternator as well? found a nice one from summit for $140 but its only 100 amp, is that enough? also i read the junkyard upgrade thread and im gonna find the intake and throttle body from a v8 explorer and im wondering if i have to upgrade the injectors???? i have more questions but ill wait for these answers..thanx in advance