2000 PONTIAC FIREBIRD Electrical Systemalternatorgeneratorregulator Problems

I HAVE HAD SEVERAL DEFECTS ON MY CAR AND I HAVE HAD IT JUST OVER 4 YEARS AND ABOUT 62,000 MILES. 1.) THE METAL AT THE END OF THE DRIVER'S SUNVISOR METAL SHAFT SHEARED AND WOULD NO LONG HOLD ASSEMBLY TOGETHER. ALMOST CAUSED CAR WRECK AND I WAS BLINDED BY THE SUNLIGHT COMING AROUND THE CORNER. REACHED UP TO PULL DOWN THE VISOR AND IT FELL INTO MY LAP. CAR'S AGE ~ 3 YRS OLD. A COUPLE OF MONTHS LATER THE PASSENGER SUNVISOR DID THE SAME. DEALERSHIP WOULD DO NOTHING BUT CHARGE &80 FOR ONE NEW VISOR. 2. DURING VEHICLE WARRANTY I HAD TO TAKE MY CAR IN REPEATEDLY FOR A HEADLIGHT THAT WOULD NOT OPERATE. STILL EXPERIENCING INTERMITTEN OPERATIONS. 3. DURING VEHIVLE WARRANTY HAD TO HAVE THE ALTERNATOR REPLACED FOR THE "LOSS OF POWER" COMPLANT MANY HAVE EXPERIENCED. SEEMED TO FIX THE ISSUE. 4. WHEN THE CAR WAS LESS...