RepairPal Certified shops can diagnose and repair your 2000 Mitsubishi Montero Sport. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
I'm wondering what the cause of replacing the alternator was. I'm thinking a good diagnosis is in order. Whereas you could indeed have an electrical concern causing power loss, it is more likely to have an air intake or fuel concern. Good luck and Happy New Year!