Z06 Headers on Silverado
 

I was scanning craigslist.

Check this link - http://sandiego.craigslist.org/csd/pts/1661746856.html

Will these fit the 5.3 liter in a 2002 silverado?

What mods would be needed, exhaust flange, etc....

Those will work good. Almost flow like shorty's. Just have an exhaust shop do the work.

bolt right up
 

so they will bolt right up to engine?

I figured the exhaust would have to be modified...just want to make sure they bolt up

Yes they should. They work on LS1 motors.