[HardcoreZ28]

Locking header bolts are the way to go. Also since nobody mentioned it.....on a thirdgen it's easiest to drop the passenger header in from the top and the driver slips in easier from the bottom. Use good quality gaskets. May have to pull the dipstick tube during install. On occassion I've even pulled my valve covers to make it easier to work around in there.....but if you have AIR injection still beware that putting the covers back on after can be a real pain.