Does anyone know what headers and y-pipe would fit a 2003 Tahoe z71?
I was wondering if the exhaust from a 4wd silverado would match up?

 

They have some exhaust kits out there for the SUVs. Truck stuff will clear on the headers and connection pipe. Past that hangers will be in the wrong spot and you might have to cut out or add segments before the axle. Who knows. After the axle would be all wrong. Just get a SUV kit.

 

thanks. Any suggestions on a reputable company?

 

Headers and Y-pipes are usually the same between the pickups and SUVs. Some are made for a more universal fit than others, some need a whack here or there with a mallet to clear this or that, some fit perfect. Figure a budget and start googling. Check the Tahoe/Yukon Forum too and see what folks there have done.