It looks like an upgrade to my alternator can be added to the list of unreachable parts for my 4cyl taurus. I have tried most all major retailers, ebay, junkyards, forums, and nada. I will soon be running a 1000w peak/500rms amp with a sub with about the same specs. The alternator now is 75amps. I cant imagine this will be enough, but dont know what else would do. Would a cap help? I also saw voltage regulators for alternators, i dont suppose its possible to change out the voltage regulator and gain an extra 25amps?