anyone know a good place to buy cheap factory parts? I need front and rear exhaust manifolds mine are cracked...

What kind of mileage is on the Tribute and is it a US spec model. Federal emissions warranty should be able to cover the replacement of the manifolds if mileage is under 80,000 as the manifolds also house the front warm up catalytic converters. We have replaced a few manifolds on MPV's for this very reason that were out of normal warranty but still under the 8/80 emissions warranty. They are not cheap at between $400-$600 each.