Hello all, problem is for the longest time my voltage has been dropping and then going back to normal. New battery installed and had alternator checked and all is well. I installed a sub and amp and it's really bad now if I turn it up any at all. Somewhere on forums I had read about swapping a 04 Dodge Durango 5.7 alternator to my 4.7. Anyone know if this is possible? I'd rather go to an higher output alt if possible or any other Alt that would be a direct fit for my engine. Thanks